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 | |
|---|---|---|---|---|---|---|
2501
iShares Global Tech ETF
IXN
$9.47B
| $609K | ﹤0.01% |
5,800
-1,800
| -24% | -$190K |
|
2502
T. Rowe Price Capital Appreciation Equity ETF
TCAF
$8.33B
| $608K | ﹤0.01% |
15,900
-33,600
| -68% | -$1.29M |
|
2503
Reading International Class A
RDI
$33.2M
| $603K | ﹤0.01% |
574,106
-33,884
| -6% | -$43.7K |
|
2504
Korro Bio
KRRO
$196M
| $600K | ﹤0.01% |
74,900
+34,500
| +85% | +$806K |
|
2505
Minerva Neurosciences
NERV
$187M
| $600K | ﹤0.01% |
149,200
+32,700
| +28% | +$121K |
|
2506
CoinShares ETF Trust CoinShares Bitcoin Mining ETF
WGMI
$237M
| $597K | ﹤0.01% |
+15,600
| New | +$764K |
|
2507
SK Telecom
SKM
$14.1B
| $595K | ﹤0.01% |
+28,995
| New | +$595K |
|
|
MPX
2508
DELISTED
Marine Products Corp
MPX
| $594K | ﹤0.01% |
67,802
-3,300
| -5% | -$28.6K |
|
2509
Biomea Fusion
BMEA
$92.8M
| $593K | ﹤0.01% |
478,619
-117,281
| -20% | -$164K |
|
2510
News Corp Class B
NWS
$17.8B
| $584K | ﹤0.01% |
19,700
+11,637
| +144% | +$347K |
|
2511
Ohio Valley Banc Corp
OVBC
$218M
| $583K | ﹤0.01% |
14,575
-800
| -5% | -$30.1K |
|
2512
CalciMedica
CALC
$20.2M
| $582K | ﹤0.01% |
88,300
+18,300
| +26% | +$71.4K |
|
2513
loanDepot
LDI
$320M
| $580K | ﹤0.01% |
280,348
+198,248
| +241% | +$551K |
|
2514
Cathay General Bancorp
CATY
$4.31B
| $579K | ﹤0.01% |
+11,971
| New | +$576K |
|
2515
Vanguard Energy ETF
VDE
$10.4B
| $579K | ﹤0.01% |
4,600
-25,100
| -85% | -$3.15M |
|
2516
NeuroOne Medical Technologies
NMTC
$15.9M
| $578K | ﹤0.01% |
127,171
+11,738
| +10% | +$53.5K |
|
2517
Broadwind
BWEN
$125M
| $577K | ﹤0.01% |
203,932
+58,932
| +41% | +$155K |
|
|
AXIA.PRC
2518
DELISTED
AXIA Energia American Depositary Shares Preferred Class C
AXIA.PRC
| $577K | ﹤0.01% |
+66,932
| New | +$578K |
|
2519
HighPeak Energy
HPK
$947M
| $576K | ﹤0.01% |
+121,500
| New | +$730K |
|
2520
The Greenbrier Companies
GBX
$1.42B
| $575K | ﹤0.01% |
12,300
-140,700
| -92% | -$6.31M |
|
|
QVCGA
2521
DELISTED
QVC Group Inc Series A
QVCGA
| $574K | ﹤0.01% |
54,831
+4,500
| +9% | +$49K |
|
2522
Rallybio
RLYB
$90.1M
| $573K | ﹤0.01% |
104,462
+15,112
| +17% | +$77.8K |
|
2523
Tradr 1.25X NVDA Bear Daily ETF
NVDS
$12.5M
| $573K | ﹤0.01% |
20,466
-4,334
| -17% | -$140K |
|
2524
Perimeter Solutions
PRM
$5.53B
| $572K | ﹤0.01% |
20,789
+2,589
| +14% | +$65.4K |
|
2525
Montauk Renewables
MNTK
$268M
| $572K | ﹤0.01% |
342,700
+6,300
| +2% | +$12.1K |
|
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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.