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 | |
|---|---|---|---|---|---|---|
1151
Heritage Financial
HFWA
$1.22B
| $6.57M | 0.01% |
277,953
-7,877
| -3% | -$185K |
|
1152
Stewart Information Services
STC
$2B
| $6.54M | 0.01% |
93,087
-27,113
| -23% | -$1.95M |
|
1153
Cullinan Oncology
CGEM
$1.26B
| $6.54M | 0.01% |
631,706
+102,298
| +19% | +$923K |
|
1154
Q2 Holdings
QTWO
$4.13B
| $6.54M | 0.01% |
90,600
+43,300
| +92% | +$2.97M |
|
|
OPTU
1155
Optimum Communications Inc
OPTU
$227M
| $6.53M | 0.01% |
3,960,000
-1,035,400
| -21% | -$2.11M |
|
1156
World Acceptance Corp
WRLD
$875M
| $6.53M | 0.01% |
46,500
-3,225
| -6% | -$485K |
|
1157
Gates Industrial Corporation Ltd.
GTES
$7.05B
| $6.52M | 0.01% |
+303,700
| New | +$7.01M |
|
1158
Middlesex Water
MSEX
$1.11B
| $6.51M | 0.01% |
129,213
-85,800
| -40% | -$4.61M |
|
1159
eGain
EGAN
$200M
| $6.49M | 0.01% |
630,819
+27,300
| +5% | +$326K |
|
1160
Fastly Inc
FSLY
$4.78B
| $6.49M | 0.01% |
637,454
+268,213
| +73% | +$2.64M |
|
1161
Bit Digital
BTBT
$520M
| $6.48M | 0.01% |
+3,426,477
| New | +$9.91M |
|
1162
iShares California Muni Bond ETF
CMF
$4.63B
| $6.47M | 0.01% |
112,600
-195,300
| -63% | -$11.2M |
|
1163
OppFi
OPFI
$608M
| $6.45M | 0.01% |
616,208
-37,607
| -6% | -$381K |
|
1164
First Financial Corp
THFF
$970M
| $6.45M | 0.01% |
106,673
-8,300
| -7% | -$478K |
|
1165
Cadre Holdings
CDRE
$1.44B
| $6.44M | 0.01% |
157,800
-31,900
| -17% | -$1.33M |
|
1166
Marcus Corp
MCS
$914M
| $6.44M | 0.01% |
415,089
-4,400
| -1% | -$65.4K |
|
1167
Gen Digital
GEN
$17.7B
| $6.43M | 0.01% |
236,438
-800,900
| -77% | -$21.6M |
|
1168
Westwood Holdings Group
WHG
$183M
| $6.43M | 0.01% |
373,458
-15,200
| -4% | -$255K |
|
1169
Genius Sports
GENI
$2.2B
| $6.42M | 0.01% |
583,000
-1,057,700
| -64% | -$11.5M |
|
1170
Bank First Corp
BFC
$1.74B
| $6.39M | 0.01% |
52,455
-22,045
| -30% | -$2.81M |
|
|
CVSA
1171
Covista Inc
CVSA
$4.49B
| $6.38M | 0.01% |
61,700
-52,200
| -46% | -$5.98M |
|
1172
Bel Fuse Inc Class A
BELFA
$3.4B
| $6.38M | 0.01% |
42,053
-700
| -2% | -$93.9K |
|
1173
iShares MSCI Hong Kong ETF
EWH
$1.21B
| $6.35M | 0.01% |
298,600
-97,100
| -25% | -$2.11M |
|
1174
Helix Energy Solutions
HLX
$1.49B
| $6.31M | 0.01% |
1,005,939
+753,712
| +299% | +$5.01M |
|
1175
Mueller Water Products
MWA
$4.09B
| $6.28M | 0.01% |
263,600
+250,100
| +1,853% | +$6.2M |
|
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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.