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 | |
|---|---|---|---|---|---|---|
501
10x Genomics
TXG
$7.58B
| $25.3M | 0.04% |
1,550,539
+505,618
| +48% | +$7.64M |
|
502
Core Scientific
CORZ
$6.36B
| $25.2M | 0.04% |
1,730,463
+175,177
| +11% | +$3.05M |
|
503
Dollar Tree
DLTR
$24.9B
| $25.2M | 0.04% |
204,703
-937,600
| -82% | -$100M |
|
504
MasterBrand
MBC
$1.89B
| $25.1M | 0.04% |
2,271,863
+158,500
| +7% | +$1.86M |
|
505
Genpact
G
$5.78B
| $25.1M | 0.04% |
536,000
+4,000
| +0.8% | +$173K |
|
506
Liberty Media Series A
FWONA
$23.7B
| $25.1M | 0.04% |
280,522
-38,500
| -12% | -$3.45M |
|
507
Protolabs
PRLB
$2.21B
| $25M | 0.04% |
493,551
-50,100
| -9% | -$2.56M |
|
508
Sarepta Therapeutics
SRPT
$1.95B
| $25M | 0.04% |
1,159,578
-1,490,600
| -56% | -$31.4M |
|
509
TechnipFMC
FTI
$30.1B
| $24.9M | 0.04% |
558,500
-369,900
| -40% | -$15.6M |
|
510
ANI Pharmaceuticals
ANIP
$1.72B
| $24.8M | 0.04% |
314,402
+41,500
| +15% | +$3.59M |
|
511
Carpenter Technology
CRS
$26.6B
| $24.8M | 0.04% |
78,800
-53,600
| -40% | -$16.1M |
|
512
Warner Music
WMG
$13.3B
| $24.8M | 0.04% |
808,222
-335,378
| -29% | -$10.2M |
|
513
Solventum
SOLV
$14.7B
| $24.8M | 0.04% |
312,800
+161,000
| +106% | +$12.3M |
|
514
Performance Food Group
PFGC
$16.4B
| $24.8M | 0.04% |
275,307
-172,700
| -39% | -$16.7M |
|
515
Ennis
EBF
$559M
| $24.6M | 0.04% |
1,368,146
-93,800
| -6% | -$1.64M |
|
516
Calix
CALX
$2.51B
| $24.5M | 0.04% |
463,618
+202,800
| +78% | +$11.8M |
|
517
Myers Industries
MYE
$1.25B
| $24.5M | 0.04% |
1,308,590
-20,407
| -2% | -$362K |
|
518
OneSpaWorld
OSW
$2.73B
| $24.5M | 0.04% |
1,180,340
-91,300
| -7% | -$1.91M |
|
519
Cogent Biosciences
COGT
$6.47B
| $24.5M | 0.04% |
689,068
+456,100
| +196% | +$12.8M |
|
520
Veeva Systems
VEEV
$41B
| $24.5M | 0.04% |
109,640
-78,360
| -42% | -$20.8M |
|
|
CDTX
521
DELISTED
Cidara Therapeutics
CDTX
| $24.4M | 0.04% |
110,560
+6,300
| +6% | +$1.02M |
|
522
Zscaler
ZS
$30.4B
| $24.4M | 0.04% |
108,300
+2,800
| +3% | +$790K |
|
523
Global Ship Lease
GSL
$1.49B
| $24.3M | 0.04% |
693,350
-145,200
| -17% | -$4.72M |
|
524
Philip Morris
PM
$294B
| $24.2M | 0.04% |
+150,900
| New | +$23.4M |
|
525
Badger Meter
BMI
$3.78B
| $24.1M | 0.04% |
138,400
-58,800
| -30% | -$10.6M |
|
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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.