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Every S&P 500 Company in One Giant Chart

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Every S&P 500 Company in One Giant Chart

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Key Takeaways

  • This chart shows all 500 companies in the S&P 500, sized by market cap and grouped by sector.
  • Nvidia, Apple, and Microsoft alone make up about 18% of the $57.6 trillion index.
  • A small group of mega-cap companies occupies a disproportionate share of the market.

What does the entire S&P 500 actually look like?

This visualization brings all 500 companies into a single view, with each sized by its share of the index and grouped by sector. It is based on data from Slickcharts as of March 30, 2026.

Each circle represents a company, making it easy to compare how market value is distributed across sectors—and to see which firms dominate the index.

One immediate takeaway is how much space is occupied by just a handful of companies. Just 10 firms now make up over 36% of the S&P 500, up from 23% in 2000.

Ranked: The Top S&P 500 Companies by Index Weight

Nvidia is now the largest company in the S&P 500, with a 7.0% index weight—larger than entire sectors like energy or utilities.

Apple follows with a 6.3% share, while Microsoft ranks third at 4.6%. These three companies account for about 18% of the S&P 500’s total value, while AI-driven firms represent 10 of the top 20 largest companies.

This table ranks every company in the S&P 500 by index weight as of March 30, 2026:

Rank Name Sector Weight %(Mar 30, 2026)
1 Nvidia Info Tech 7.0%
2 Apple Inc. Info Tech 6.3%
3 Microsoft Info Tech 4.6%
4 Amazon Consumer Discretionary 3.7%
5 Alphabet Inc. (Class A) Communication Services 3.0%
6 Alphabet Inc. (Class C) Communication Services 2.8%
7 Broadcom Info Tech 2.4%
8 Meta Platforms Communication Services 2.4%
9 Tesla, Inc. Consumer Discretionary 2.3%
10 Berkshire Hathaway Financials 1.8%
11 Walmart Consumer Staples 1.7%
12 Lilly (Eli) Health Care 1.4%
13 JPMorgan Chase Financials 1.3%
14 ExxonMobil Energy 1.2%
15 Johnson & Johnson Health Care 1.0%
16 Visa Inc. Financials 1.0%
17 Costco Consumer Staples 0.8%
18 Mastercard Financials 0.8%
19 Chevron Corporation Energy 0.7%
20 Oracle Corporation Info Tech 0.7%
21 Netflix Communication Services 0.7%
22 AbbVie Health Care 0.7%
23 Micron Technology Info Tech 0.6%
24 Bank of America Financials 0.6%
25 Procter & Gamble Consumer Staples 0.6%
26 Coca-Cola Company (The) Consumer Staples 0.6%
27 Palantir Technologies Info Tech 0.6%
28 Home Depot (The) Consumer Discretionary 0.6%
29 Advanced Micro Devices Info Tech 0.6%
30 Caterpillar Inc. Industrials 0.5%
31 Cisco Info Tech 0.5%
32 Merck & Co. Health Care 0.5%
33 GE Aerospace Industrials 0.5%
34 Philip Morris International Consumer Staples 0.5%
35 Applied Materials Info Tech 0.5%
36 Morgan Stanley Financials 0.4%
37 RTX Corporation Industrials 0.4%
38 Lam Research Info Tech 0.4%
39 T-Mobile US Communication Services 0.4%
40 Goldman Sachs Financials 0.4%
41 Wells Fargo Financials 0.4%
42 UnitedHealth Group Health Care 0.4%
43 Linde plc Materials 0.4%
44 IBM Info Tech 0.4%
45 McDonald's Consumer Discretionary 0.4%
46 GE Vernova Industrials 0.4%
47 Verizon Communication Services 0.4%
48 PepsiCo Consumer Staples 0.4%
49 Intel Info Tech 0.4%
50 AT&T Communication Services 0.4%
51 American Express Financials 0.4%
52 Citigroup Financials 0.3%
53 Amgen Health Care 0.3%
54 NextEra Energy Utilities 0.3%
55 Thermo Fisher Scientific Health Care 0.3%
56 Abbott Laboratories Health Care 0.3%
57 KLA Corporation Info Tech 0.3%
58 TJX Companies Consumer Discretionary 0.3%
59 Salesforce Info Tech 0.3%
60 Walt Disney Company (The) Communication Services 0.3%
61 Gilead Sciences Health Care 0.3%
62 Texas Instruments Info Tech 0.3%
63 ConocoPhillips Energy 0.3%
64 Charles Schwab Corporation Financials 0.3%
65 Intuitive Surgical Health Care 0.3%
66 Pfizer Health Care 0.3%
67 Deere & Company Industrials 0.3%
68 Boeing Industrials 0.3%
69 Analog Devices Info Tech 0.3%
70 Uber Industrials 0.3%
71 BlackRock Financials 0.3%
72 Honeywell Industrials 0.3%
73 Union Pacific Corporation Industrials 0.3%
74 Amphenol Info Tech 0.3%
75 Arista Networks Info Tech 0.3%
76 Lockheed Martin Industrials 0.2%
77 Qualcomm Info Tech 0.2%
78 Welltower Real Estate 0.2%
79 Booking Holdings Consumer Discretionary 0.2%
80 Lowe's Consumer Discretionary 0.2%
81 Danaher Corporation Health Care 0.2%
82 Eaton Corporation Industrials 0.2%
83 Chubb Limited Financials 0.2%
84 S&P Global Financials 0.2%
85 Stryker Corporation Health Care 0.2%
86 AppLovin Corporation Info Tech 0.2%
87 Palo Alto Networks Info Tech 0.2%
88 Bristol Myers Squibb Health Care 0.2%
89 Accenture Info Tech 0.2%
90 Intuit Info Tech 0.2%
91 Prologis Real Estate 0.2%
92 Progressive Corporation Financials 0.2%
93 Vertex Pharmaceuticals Health Care 0.2%
94 Altria Consumer Staples 0.2%
95 Capital One Financials 0.2%
96 CME Group Financials 0.2%
97 Medtronic Health Care 0.2%
98 Parker Hannifin Industrials 0.2%
99 Corning Inc. Info Tech 0.2%
100 ServiceNow Info Tech 0.2%
101 Newmont Materials 0.2%
102 Southern Company Utilities 0.2%
103 Constellation Energy Utilities 0.2%
104 Comcast Communication Services 0.2%
105 McKesson Corporation Health Care 0.2%
106 HCA Healthcare Health Care 0.2%
107 Dell Technologies Info Tech 0.2%
108 Duke Energy Utilities 0.2%
109 Starbucks Consumer Discretionary 0.2%
110 Northrop Grumman Industrials 0.2%
111 Adobe Inc. Info Tech 0.2%
112 CrowdStrike Info Tech 0.2%
113 Boston Scientific Health Care 0.2%
114 Waste Management Industrials 0.2%
115 General Dynamics Industrials 0.2%
116 Vertiv Holdings Co Industrials 0.2%
117 Howmet Aerospace Industrials 0.2%
118 Trane Technologies Industrials 0.2%
119 Equinix Real Estate 0.2%
120 Marriott International Consumer Discretionary 0.2%
121 Williams Companies Energy 0.2%
122 Intercontinental Exchange Financials 0.2%
123 Blackstone Inc. Financials 0.2%
124 Marsh & McLennan Companies, Inc. Financials 0.2%
125 CVS Health Health Care 0.2%
126 Western Digital Info Tech 0.2%
127 Sandisk Corporation Info Tech 0.2%
128 EOG Resources Energy 0.1%
129 PNC Financial Services Financials 0.1%
130 KKR Financials 0.1%
131 BNY Mellon Financials 0.1%
132 U.S. Bancorp Financials 0.1%
133 Regeneron Pharmaceuticals Health Care 0.1%
134 Automatic Data Processing Industrials 0.1%
135 FedEx Industrials 0.1%
136 United Parcel Service Industrials 0.1%
137 Quanta Services Industrials 0.1%
138 Seagate Technology Info Tech 0.1%
139 Freeport-McMoRan Materials 0.1%
140 Sherwin-Williams Materials 0.1%
141 American Tower Real Estate 0.1%
142 O'Reilly Auto Parts Consumer Discretionary 0.1%
143 Nike, Inc. Consumer Discretionary 0.1%
144 Airbnb Consumer Discretionary 0.1%
145 Mondelez International Consumer Staples 0.1%
146 Schlumberger Energy 0.1%
147 Kinder Morgan Energy 0.1%
148 Valero Energy Energy 0.1%
149 Phillips 66 Energy 0.1%
150 Marathon Petroleum Energy 0.1%
151 Moody's Corporation Financials 0.1%
152 Johnson Controls Industrials 0.1%
153 3M Industrials 0.1%
154 CSX Corporation Industrials 0.1%
155 Illinois Tool Works Industrials 0.1%
156 Cadence Design Systems Info Tech 0.1%
157 Synopsys Info Tech 0.1%
158 Ecolab Materials 0.1%
159 Warner Bros. Discovery Communication Services 0.1%
160 Royal Caribbean Group Consumer Discretionary 0.1%
161 Hilton Worldwide Consumer Discretionary 0.1%
162 Ross Stores Consumer Discretionary 0.1%
163 Monster Beverage Consumer Staples 0.1%
164 Colgate-Palmolive Consumer Staples 0.1%
165 Aon Financials 0.1%
166 Cigna Health Care 0.1%
167 Cummins Industrials 0.1%
168 Emerson Electric Industrials 0.1%
169 Republic Services Industrials 0.1%
170 Cintas Industrials 0.1%
171 Motorola Solutions Info Tech 0.1%
172 CRH plc Materials 0.1%
173 American Electric Power Utilities 0.1%
174 General Motors Consumer Discretionary 0.1%
175 DoorDash Consumer Discretionary 0.1%
176 Occidental Petroleum Energy 0.1%
177 Apollo Global Management Financials 0.1%
178 Travelers Companies (The) Financials 0.1%
179 Elevance Health Health Care 0.1%
180 TransDigm Group Industrials 0.1%
181 L3Harris Industrials 0.1%
182 Norfolk Southern Railway Industrials 0.1%
183 Air Products Materials 0.1%
184 Sempra Utilities 0.1%
185 AutoZone Consumer Discretionary 0.1%
186 Baker Hughes Energy 0.1%
187 ONEOK Energy 0.1%
188 Diamondback Energy Energy 0.1%
189 Robinhood Markets, Inc. Financials 0.1%
190 Aflac Financials 0.1%
191 Arthur J. Gallagher & Co. Financials 0.1%
192 Truist Financial Financials 0.1%
193 Cencora Health Care 0.1%
194 Paccar Industrials 0.1%
195 Fortinet Info Tech 0.1%
196 TE Connectivity Info Tech 0.1%
197 Corteva Materials 0.1%
198 Digital Realty Real Estate 0.1%
199 Simon Property Group Real Estate 0.1%
200 Realty Income Real Estate 0.1%
201 Electronic Arts Communication Services 0.1%
202 Target Corporation Consumer Discretionary 0.1%
203 Targa Resources Energy 0.1%
204 Allstate Financials 0.1%
205 Zoetis Health Care 0.1%
206 Fastenal Industrials 0.1%
207 W. W. Grainger Industrials 0.1%
208 Ciena Corporation Info Tech 0.1%
209 Autodesk Info Tech 0.1%
210 Monolithic Power Systems Info Tech 0.1%
211 Dominion Energy Utilities 0.1%
212 Entergy Utilities 0.1%
213 Exelon Utilities 0.1%
214 Vistra Corp. Utilities 0.1%
215 Xcel Energy Utilities 0.1%
216 Ford Motor Company Consumer Discretionary 0.1%
217 Garmin Consumer Discretionary 0.1%
218 Kroger Consumer Staples 0.1%
219 Hershey Company (The) Consumer Staples 0.1%
220 Nasdaq, Inc. Financials 0.1%
221 MetLife Financials 0.1%
222 Cardinal Health Health Care 0.1%
223 Edwards Lifesciences Health Care 0.1%
224 Idexx Laboratories Health Care 0.1%
225 Becton Dickinson Health Care 0.1%
226 Ametek Industrials 0.1%
227 Carrier Global Industrials 0.1%
228 United Rentals Industrials 0.1%
229 Comfort Systems USA, Inc. Industrials 0.1%
230 NXP Semiconductors Info Tech 0.1%
231 Lumentum Holdings Inc. Info Tech 0.1%
232 Keysight Technologies Info Tech 0.1%
233 Teradyne Info Tech 0.1%
234 Public Storage Real Estate 0.1%
235 Yum! Brands Consumer Discretionary 0.1%
236 Carvana Co. Consumer Discretionary 0.1%
237 Chipotle Mexican Grill Consumer Discretionary 0.1%
238 eBay Consumer Discretionary 0.1%
239 D. R. Horton Consumer Discretionary 0.1%
240 EQT Corporation Energy 0.1%
241 Coinbase Global Financials 0.1%
242 PayPal Financials 0.1%
243 Fifth Third Bancorp Financials 0.1%
244 Ameriprise Financial Financials 0.1%
245 American International Group Financials 0.1%
246 MSCI Financials 0.1%
247 Delta Air Lines Industrials 0.1%
248 Wabtec Industrials 0.1%
249 Old Dominion Industrials 0.1%
250 Rockwell Automation Industrials 0.1%
251 Coherent, Inc. Info Tech 0.1%
252 Datadog Info Tech 0.1%
253 Nucor Materials 0.1%
254 CBRE Group Real Estate 0.1%
255 Ventas Real Estate 0.1%
256 Consolidated Edison Utilities 0.1%
257 Public Service Enterprise Group Utilities 0.1%
258 PG&E Corporation Utilities 0.1%
259 WEC Energy Group Utilities 0.1%
260 Take-Two Interactive Communication Services 0.1%
261 Live Nation Entertainment Communication Services 0.1%
262 EchoStar Corporation Communication Services 0.1%
263 Las Vegas Sands Consumer Discretionary 0.1%
264 Carnival Consumer Discretionary 0.1%
265 Keurig Dr Pepper Consumer Staples 0.1%
266 Archer Daniels Midland Consumer Staples 0.1%
267 Sysco Consumer Staples 0.1%
268 Kenvue Consumer Staples 0.1%
269 Kimberly-Clark Consumer Staples 0.1%
270 Halliburton Energy 0.1%
271 Texas Pacific Land Corporation Energy 0.1%
272 Devon Energy Energy 0.1%
273 Hartford (The) Financials 0.1%
274 State Street Corporation Financials 0.1%
275 Block, Inc. Financials 0.1%
276 Arch Capital Group Financials 0.1%
277 Prudential Financial Financials 0.1%
278 ResMed Health Care 0.1%
279 Axon Enterprise Industrials 0.1%
280 Paychex Industrials 0.1%
281 Roper Technologies Info Tech 0.1%
282 Workday, Inc. Info Tech 0.1%
283 Microchip Technology Info Tech 0.1%
284 Vulcan Materials Company Materials 0.1%
285 Martin Marietta Materials Materials 0.1%
286 Crown Castle Real Estate 0.1%
287 Charter Communications Communication Services 0.1%
288 Expedia Group Consumer Discretionary 0.1%
289 Tapestry, Inc. Consumer Discretionary 0.1%
290 Dollar General Consumer Discretionary 0.1%
291 Kraft Heinz Consumer Staples 0.1%
292 Constellation Brands Consumer Staples 0.1%
293 Coterra Energy 0.1%
294 Expand Energy Energy 0.1%
295 Huntington Bancshares Financials 0.1%
296 M&T Bank Financials 0.1%
297 Cboe Global Markets Financials 0.1%
298 Fiserv, Inc. Financials 0.1%
299 Interactive Brokers Group Financials 0.1%
300 Raymond James Financial Financials 0.1%
301 Willis Towers Watson Financials 0.1%
302 Agilent Technologies Health Care 0.1%
303 GE HealthCare Health Care 0.1%
304 Waters Corporation Health Care 0.1%
305 IQVIA Health Care 0.1%
306 Biogen Health Care 0.1%
307 Copart Industrials 0.1%
308 EMCOR Group, Inc. Industrials 0.1%
309 Ingersoll Rand Industrials 0.1%
310 Otis Worldwide Industrials 0.1%
311 Xylem Inc. Industrials 0.1%
312 United Airlines Holdings Industrials 0.1%
313 Dover Corporation Industrials 0.1%
314 Hewlett Packard Enterprise Info Tech 0.1%
315 Cognizant Info Tech 0.1%
316 Teledyne Technologies Info Tech 0.1%
317 Jabil Info Tech 0.1%
318 Dow Inc. Materials 0.1%
319 LyondellBasell Materials 0.1%
320 Iron Mountain Real Estate 0.1%
321 Vici Properties Real Estate 0.1%
322 Extra Space Storage Real Estate 0.1%
323 Atmos Energy Utilities 0.1%
324 DTE Energy Utilities 0.1%
325 Ameren Utilities 0.1%
326 NRG Energy Utilities 0.1%
327 FirstEnergy Utilities 0.1%
328 PPL Corporation Utilities 0.1%
329 CenterPoint Energy Utilities 0.1%
330 Edison International Utilities 0.1%
331 American Water Works Utilities 0.1%
332 Omnicom Group Communication Services 0.04%
333 Tractor Supply Consumer Discretionary 0.04%
334 Darden Restaurants Consumer Discretionary 0.04%
335 Ulta Beauty Consumer Discretionary 0.04%
336 PulteGroup Consumer Discretionary 0.04%
337 Williams-Sonoma Consumer Discretionary 0.04%
338 Lennar Consumer Discretionary 0.04%
339 Dollar Tree Consumer Staples 0.04%
340 Estée Lauder Companies (The) Consumer Staples 0.04%
341 Bunge Global Consumer Staples 0.04%
342 Tyson Foods Consumer Staples 0.04%
343 Church & Dwight Consumer Staples 0.04%
344 Northern Trust Financials 0.04%
345 W. R. Berkley Corporation Financials 0.04%
346 Citizens Financial Group Financials 0.04%
347 Fidelity National Information Services Financials 0.04%
348 Cincinnati Financial Financials 0.04%
349 Ares Management Corporation Financials 0.04%
350 Synchrony Financial Financials 0.04%
351 Brown & Brown Financials 0.04%
352 Loews Corporation Financials 0.04%
353 Regions Financial Corporation Financials 0.04%
354 KeyCorp Financials 0.04%
355 Mettler Toledo Health Care 0.04%
356 Dexcom Health Care 0.04%
357 LabCorp Health Care 0.04%
358 Quest Diagnostics Health Care 0.04%
359 Steris Health Care 0.04%
360 Verisk Analytics Industrials 0.04%
361 Rollins, Inc. Industrials 0.04%
362 Hubbell Incorporated Industrials 0.04%
363 Equifax Industrials 0.04%
364 Veralto Industrials 0.04%
365 Fair Isaac Info Tech 0.04%
366 Verisign Info Tech 0.04%
367 Qnity Electronics Info Tech 0.04%
368 ON Semiconductor Info Tech 0.04%
369 Steel Dynamics Materials 0.04%
370 PPG Industries Materials 0.04%
371 CF Industries Materials 0.04%
372 Albemarle Corporation Materials 0.04%
373 AvalonBay Communities Real Estate 0.04%
374 Equity Residential Real Estate 0.04%
375 Eversource Energy Utilities 0.04%
376 CMS Energy Utilities 0.04%
377 NiSource Utilities 0.04%
378 TKO Group Holdings Communication Services 0.03%
379 Ralph Lauren Corporation Consumer Discretionary 0.03%
380 NVR, Inc. Consumer Discretionary 0.03%
381 Lululemon Athletica Consumer Discretionary 0.03%
382 Genuine Parts Company Consumer Discretionary 0.03%
383 General Mills Consumer Staples 0.03%
384 McCormick & Company Consumer Staples 0.03%
385 APA Corporation Energy 0.03%
386 Corpay Financials 0.03%
387 T. Rowe Price Financials 0.03%
388 Principal Financial Group Financials 0.03%
389 Broadridge Financial Solutions Financials 0.03%
390 Global Payments Financials 0.03%
391 Humana Health Care 0.03%
392 Moderna Health Care 0.03%
393 Incyte Health Care 0.03%
394 West Pharmaceutical Services Health Care 0.03%
395 Zimmer Biomet Health Care 0.03%
396 Hologic Health Care 0.03%
397 Centene Corporation Health Care 0.03%
398 Viatris Health Care 0.03%
399 Insulet Corporation Health Care 0.03%
400 Leidos Industrials 0.03%
401 J.B. Hunt Industrials 0.03%
402 C.H. Robinson Industrials 0.03%
403 Expeditors International Industrials 0.03%
404 Snap-on Industrials 0.03%
405 Southwest Airlines Industrials 0.03%
406 Fortive Industrials 0.03%
407 Lennox International Industrials 0.03%
408 Textron Industrials 0.03%
409 Jacobs Solutions Industrials 0.03%
410 Huntington Ingalls Industries Industrials 0.03%
411 NetApp Info Tech 0.03%
412 First Solar Info Tech 0.03%
413 HP Inc. Info Tech 0.03%
414 PTC Inc. Info Tech 0.03%
415 Akamai Technologies Info Tech 0.03%
416 F5, Inc. Info Tech 0.03%
417 CDW Info Tech 0.03%
418 Trimble Inc. Info Tech 0.03%
419 Tyler Technologies Info Tech 0.03%
420 Smurfit WestRock Materials 0.03%
421 Packaging Corporation of America Materials 0.03%
422 International Paper Materials 0.03%
423 International Flavors & Fragrances Materials 0.03%
424 DuPont Materials 0.03%
425 Amcor Materials 0.03%
426 Ball Corporation Materials 0.03%
427 SBA Communications Real Estate 0.03%
428 Weyerhaeuser Real Estate 0.03%
429 CoStar Group Real Estate 0.03%
430 Essex Property Trust Real Estate 0.03%
431 Invitation Homes Real Estate 0.03%
432 Kimco Realty Real Estate 0.03%
433 Evergy Utilities 0.03%
434 Alliant Energy Utilities 0.03%
435 Fox Corporation (Class B) Communication Services 0.02%
436 Fox Corporation (Class A) Communication Services 0.02%
437 The Trade Desk, Inc. Communication Services 0.02%
438 Paramount Skydance Corp Communication Services 0.02%
439 News Corp (Class A) Communication Services 0.02%
440 Aptiv Consumer Discretionary 0.02%
441 Deckers Brands Consumer Discretionary 0.02%
442 Best Buy Consumer Discretionary 0.02%
443 Hasbro Consumer Discretionary 0.02%
444 Domino's Consumer Discretionary 0.02%
445 Wynn Resorts Consumer Discretionary 0.02%
446 MGM Resorts Consumer Discretionary 0.02%
447 Hormel Foods Consumer Staples 0.02%
448 Clorox Consumer Staples 0.02%
449 Brown–Forman Consumer Staples 0.02%
450 J.M. Smucker Company (The) Consumer Staples 0.02%
451 Everest Group Financials 0.02%
452 Erie Indemnity Financials 0.02%
453 Franklin Resources Financials 0.02%
454 Assurant Financials 0.02%
455 Globe Life Financials 0.02%
456 Invesco Financials 0.02%
457 Cooper Companies (The) Health Care 0.02%
458 Align Technology Health Care 0.02%
459 Universal Health Services Health Care 0.02%
460 Solventum Health Care 0.02%
461 DaVita Health Care 0.02%
462 Revvity Health Care 0.02%
463 Nordson Corporation Industrials 0.02%
464 IDEX Corporation Industrials 0.02%
465 Pentair Industrials 0.02%
466 Allegion Industrials 0.02%
467 Masco Industrials 0.02%
468 Generac Industrials 0.02%
469 Stanley Black & Decker Industrials 0.02%
470 A. O. Smith Industrials 0.02%
471 Builders FirstSource Industrials 0.02%
472 Supermicro Info Tech 0.02%
473 Jack Henry & Associates Info Tech 0.02%
474 Gartner Info Tech 0.02%
475 Gen Digital Info Tech 0.02%
476 GoDaddy Info Tech 0.02%
477 Zebra Technologies Info Tech 0.02%
478 Avery Dennison Materials 0.02%
479 Mid-America Apartment Communities Real Estate 0.02%
480 Regency Centers Real Estate 0.02%
481 Host Hotels & Resorts Real Estate 0.02%
482 Healthpeak Properties Real Estate 0.02%
483 UDR, Inc. Real Estate 0.02%
484 Camden Property Trust Real Estate 0.02%
485 Federal Realty Investment Trust Real Estate 0.02%
486 Pinnacle West Utilities 0.02%
487 AES Corporation Utilities 0.02%
488 News Corp (Class B) Communication Services 0.01%
489 Norwegian Cruise Line Holdings Consumer Discretionary 0.01%
490 Pool Corporation Consumer Discretionary 0.01%
491 Molson Coors Beverage Company Consumer Staples 0.01%
492 Conagra Brands Consumer Staples 0.01%
493 Campbell Soup Company Consumer Staples 0.01%
494 FactSet Financials 0.01%
495 Henry Schein Health Care 0.01%
496 Baxter International Health Care 0.01%
497 Bio-Techne Health Care 0.01%
498 Charles River Laboratories Health Care 0.01%
499 Skyworks Solutions Info Tech 0.01%
500 EPAM Systems Info Tech 0.01%
501 Mosaic Company (The) Materials 0.01%
502 BXP, Inc. Real Estate 0.01%
503 Alexandria Real Estate Equities Real Estate 0.01%

Berkshire Hathaway is the only financials company in the top 10 by market cap, with its ranking falling from sixth to 10th place since 2023. By contrast, Walmart has climbed to 11th from 29th in just two years amid strong online sales.

Among health care firms, Eli Lilly (#12) has overtaken UnitedHealth Group (#42) as the most valuable company, fueled by sales of its weight-loss drugs.

Why This Concentration Matters

While the top 10 companies’ share of the index has edged down from 41% in 2025, its still-elevated concentration relative to historical levels has real implications:

  • Diversification is shrinking: Index investors are more exposed to a handful of companies than at previous market-cycle peaks
  • Market performance is narrowing: A small group of firms is increasingly driving overall returns
  • The index is evolving: The S&P 500 may no longer broadly reflect the U.S. economy

In effect, the market is behaving less like a 500-company index, and more like a concentrated bet on a few dominant firms. At the center of this shift is the AI boom, illustrating how a single technological wave is reshaping the market’s hierarchy.

Learn More on the Voronoi App

To learn more about this topic, check out this graphic on 151 years of S&P 500 returns.

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