Jim Simons Renaissance Technologies
Jim Simons is the founder of Renaissance Technologies, one of the most successful quantitative hedge funds in the world. Before his career in finance, he served as a mathematics professor and made significant contributions to differential geometry. Simons applied his analytical expertise to develop sophisticated, algorithm-driven trading strategies, earning consistently high returns for investors.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Costco
COST
|
+$616M |
| 2 |
Netflix
NFLX
|
+$481M |
| 3 |
Micron Technology
MU
|
+$416M |
| 4 |
Tesla
TSLA
|
+$416M |
| 5 |
Procter & Gamble
PG
|
+$322M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$885M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$660M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$463M |
| 4 |
Applovin
APP
|
+$430M |
| 5 |
Meta Platforms (Facebook)
META
|
+$354M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 20.84% |
| 2 | Healthcare | 15.77% |
| 3 | Consumer Discretionary | 13.88% |
| 4 | Industrials | 9.94% |
| 5 | Financials | 8.79% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
326
Chubb
CB
$134B
| $43.6M | 0.07% |
139,639
-155,460
| -53% | -$45.5M |
|
327
Hudbay
HBM
$12.6B
| $43.5M | 0.07% |
2,191,909
-1,760,100
| -45% | -$29.8M |
|
328
NIO
NIO
$11.5B
| $43.3M | 0.07% |
8,489,400
+1,075,960
| +15% | +$6.64M |
|
329
Centene
CNC
$32.4B
| $43.3M | 0.07% |
+1,052,112
| New | +$39.4M |
|
330
Mobileye
MBLY
$7.51B
| $43M | 0.07% |
4,117,670
-1,198,576
| -23% | -$15M |
|
331
CRA International
CRAI
$1.06B
| $42.9M | 0.07% |
213,975
-32,700
| -13% | -$6.16M |
|
332
Jabil
JBL
$38.5B
| $42.8M | 0.07% |
187,800
+76,300
| +68% | +$16.3M |
|
333
Upwork
UPWK
$1.03B
| $42.8M | 0.07% |
2,159,042
+356,327
| +20% | +$6.53M |
|
334
Sabesp
SBS
$17.9B
| $42.6M | 0.07% |
8,946,469
-612,151
| -6% | -$2.96M |
|
335
Datadog
DDOG
$90B
| $42.5M | 0.07% |
312,330
-398,722
| -56% | -$63M |
|
336
A.O. Smith
AOS
$8.55B
| $42.3M | 0.07% |
632,700
+224,800
| +55% | +$15.2M |
|
337
Dollar General
DG
$26.2B
| $42.2M | 0.07% |
318,204
-732,496
| -70% | -$81.7M |
|
|
PPL
338
PPL Corp
PPL
$26.6B
| $42.2M | 0.07% |
1,204,900
-249,300
| -17% | -$8.99M |
|
339
Regions Financial
RF
$26.8B
| $41.9M | 0.07% |
1,546,421
+354,700
| +30% | +$9.06M |
|
340
Dynatrace
DT
$14.1B
| $41.8M | 0.06% |
964,400
+452,742
| +88% | +$21.1M |
|
341
Pinterest
PINS
$13.1B
| $41.8M | 0.06% |
1,613,631
-181,240
| -10% | -$5.22M |
|
342
Snap
SNAP
$9.1B
| $41.3M | 0.06% |
5,117,400
+467,100
| +10% | +$3.69M |
|
343
Cencora
COR
$61.6B
| $41.2M | 0.06% |
121,940
+94,340
| +342% | +$32.2M |
|
344
Acadia Pharmaceuticals
ACAD
$5.07B
| $40.9M | 0.06% |
1,532,596
+83,063
| +6% | +$1.98M |
|
345
Rigetti Computing
RGTI
$6.06B
| $40.9M | 0.06% |
1,846,451
-207,779
| -10% | -$6.77M |
|
346
Takeda Pharmaceutical
TAK
$55.7B
| $40.8M | 0.06% |
2,618,300
-1,246,300
| -32% | -$17.8M |
|
347
LPL Financial
LPLA
$29.2B
| $40.7M | 0.06% |
114,060
+31,460
| +38% | +$11.1M |
|
348
Gentex
GNTX
$4.98B
| $40.2M | 0.06% |
1,727,552
+768,256
| +80% | +$18.5M |
|
349
Bank OZK
OZK
$5.66B
| $40.1M | 0.06% |
870,597
+229,100
| +36% | +$10.7M |
|
350
Harmony Biosciences
HRMY
$2.3B
| $40.1M | 0.06% |
1,070,471
-66,600
| -6% | -$2.19M |
|
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Jim Simons's Q4 2025 Portfolio in Review
As of Q4 2025, Jim Simons held 3,923 positions worth $64.5B, down 15% from $75.8B the previous quarter. Its ten largest holdings account for 12% of the portfolio.
Jim Simons withdrew a net $10.1B in Q4 2025, closing 737 positions and reducing 1,682 holdings. Its most notable exit was Meta Platforms (Facebook), an estimated $354M position sold in full.
By sector, the portfolio is most concentrated in Technology at 21% of assets, down from 22% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Jim Simons opened a new position in ServiceNow worth $204M.
- Jim Simons's largest Q4 2025 buy was ServiceNow: 1,331,977 shares worth $204M.
- Jim Simons added most to Costco in Q4 2025, an estimated $616M increase.
- Jim Simons's biggest Q4 2025 reduction was NVIDIA, cutting an estimated $885M.
- Jim Simons fully exited Meta Platforms (Facebook) in Q4 2025, selling an estimated $354M.
- Jim Simons's ten largest holdings make up 12% of its $64.5B portfolio in Q4 2025.
- Jim Simons opened 466 new positions and closed 737 in Q4 2025.
- Jim Simons's portfolio value fell 15% quarter-over-quarter to $64.5B.
Based on Renaissance Technologies's 13F filing for Q4 2025, filed 12 Feb 2026.