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 | |
|---|---|---|---|---|---|---|
2551
Actinium Pharmaceuticals
ATNM
$30.2M
| $531K | ﹤0.01% |
390,784
+102,154
| +35% | +$149K |
|
2552
Avantis Emerging Markets Equity ETF
AVEM
$27B
| $531K | ﹤0.01% |
6,900
-5,600
| -45% | -$429K |
|
2553
Purple Innovation
PRPL
$28.7M
| $531K | ﹤0.01% |
30,740
-1,022
| -3% | -$20.4K |
|
2554
Business First Bancshares
BFST
$1.05B
| $531K | ﹤0.01% |
20,300
-11,500
| -36% | -$291K |
|
|
PLGO
2555
Pelagos Insurance Capital
PLGO
$1.95B
| $530K | ﹤0.01% |
27,100
-205,940
| -88% | -$3.84M |
|
2556
Biote Corp
BTMD
$42.7M
| $529K | ﹤0.01% |
203,594
+10,900
| +6% | +$29.8K |
|
2557
Betterware México
BWMX
$611M
| $529K | ﹤0.01% |
37,200
-3,100
| -8% | -$42.8K |
|
2558
St. Joe Company
JOE
$3.89B
| $528K | ﹤0.01% |
+8,900
| New | +$498K |
|
|
FLY
2559
Firefly Aerospace
FLY
$4.48B
| $526K | ﹤0.01% |
+23,500
| New | +$544K |
|
|
AXG
2560
Solowin Holdings
AXG
$533M
| $525K | ﹤0.01% |
+127,700
| New | +$457K |
|
2561
Xencor
XNCR
$1.71B
| $523K | ﹤0.01% |
34,158
-156,231
| -82% | -$2.33M |
|
2562
Plumas Bancorp
PLBC
$442M
| $523K | ﹤0.01% |
11,700
+395
| +3% | +$16.9K |
|
|
DEA
2563
Easterly Government Properties
DEA
$1.18B
| $521K | ﹤0.01% |
24,600
-13,466
| -35% | -$292K |
|
|
ASIC
2564
Ategrity Specialty Insurance
ASIC
$1.2B
| $519K | ﹤0.01% |
24,700
-448
| -2% | -$8.47K |
|
2565
John Marshall Bancorp
JMSB
$328M
| $518K | ﹤0.01% |
+25,900
| New | +$510K |
|
|
CBNA
2566
Chain Bridge Bancorp
CBNA
$314M
| $513K | ﹤0.01% |
14,800
-3,200
| -18% | -$103K |
|
2567
Surrozen
SRZN
$279M
| $511K | ﹤0.01% |
22,626
+7,900
| +54% | +$128K |
|
2568
Skillsoft
SKIL
$78.4M
| $511K | ﹤0.01% |
54,909
-4,971
| -8% | -$55.4K |
|
2569
iShares US Regional Banks ETF
IAT
$689M
| $507K | ﹤0.01% |
9,200
-9,500
| -51% | -$493K |
|
2570
Nautilus Biotechnolgy
NAUT
$113M
| $507K | ﹤0.01% |
259,900
-747,762
| -74% | -$1.23M |
|
2571
Nephros
NEPH
$50.9M
| $506K | ﹤0.01% |
103,772
+21,272
| +26% | +$109K |
|
2572
CS Disco
LAW
$297M
| $506K | ﹤0.01% |
65,200
+21,400
| +49% | +$151K |
|
|
OPENW
2573
Opendoor Technologies Inc Series K Warrants
OPENW
$6.98M
| $505K | ﹤0.01% |
+560,678
| New | +$757K |
|
2574
EuroDry
EDRY
$112M
| $504K | ﹤0.01% |
39,300
-800
| -2% | -$10.3K |
|
2575
MGP Ingredients
MGPI
$389M
| $503K | ﹤0.01% |
+20,700
| New | +$504K |
|
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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.