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 |
NVIDIA
NVDA
|
+$798M |
| 2 |
Netflix
NFLX
|
+$608M |
| 3 |
UnitedHealth
UNH
|
+$517M |
| 4 |
Apple
AAPL
|
+$461M |
| 5 |
GE Vernova
GEV
|
+$296M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$527M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$372M |
| 3 |
Meta Platforms (Facebook)
META
|
+$362M |
| 4 |
Advanced Micro Devices
AMD
|
+$328M |
| 5 |
Palantir
PLTR
|
+$327M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 19.57% |
| 2 | Healthcare | 15.8% |
| 3 | Consumer Discretionary | 12.38% |
| 4 | Financials | 11.53% |
| 5 | Industrials | 8.92% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3426
ESS Tech
GWH
$19.6M
| $36.7K | ﹤0.01% |
27,560
+11,700
| +74% | +$21.9K |
|
3427
ALX Oncology
ALXO
$268M
| $35.4K | ﹤0.01% |
85,399
+71,100
| +497% | +$35.9K |
|
|
XTKG
3428
DELISTED
X3 Holdings Co., Ltd. Class A Ordinary Shares
XTKG
| $34.9K | ﹤0.01% |
120
+6
| +5% | +$1.42K |
|
|
BRNS
3429
Barinthus Biotherapeutics
BRNS
$24.5M
| $33.8K | ﹤0.01% |
36,300
+600
| +2% | +$524 |
|
3430
Hyperfine
HYPR
$94.7M
| $33.7K | ﹤0.01% |
46,900
+28,600
| +156% | +$20K |
|
|
HKD
3431
AMTD Digital
HKD
$531M
| $33.6K | ﹤0.01% |
+19,200
| New | +$38.3K |
|
3432
Boxlight
BOXL
$4.54M
| $33.4K | ﹤0.01% |
527
-53
| -9% | -$3.1K |
|
3433
X4 Pharmaceuticals
XFOR
$425M
| $33K | ﹤0.01% |
17,366
+16,696
| +2,492% | +$68.3K |
|
3434
Cenntro
CENN
$8.41M
| $32.5K | ﹤0.01% |
699
+177
| +34% | +$9.15K |
|
3435
ClearSign Technologies
CLIR
$28.9M
| $32.5K | ﹤0.01% |
5,800
-1,702
| -23% | -$10.3K |
|
|
MOGU
3436
MOGU Inc
MOGU
$16.3M
| $32K | ﹤0.01% |
15,057
-100
| -0.7% | -$215 |
|
3437
Socket Mobile
SCKT
$11.2M
| $31.4K | ﹤0.01% |
27,344
-20,756
| -43% | -$23.8K |
|
|
ZKH
3438
ZKH Group
ZKH
$465M
| $31K | ﹤0.01% |
10,100
-29,867
| -75% | -$89.7K |
|
3439
Royalty Management
RMCO
$46.2M
| $30.8K | ﹤0.01% |
+23,700
| New | +$26.8K |
|
3440
Wah Fu Education Group
WAFU
$6.31M
| $30.7K | ﹤0.01% |
21,900
-18,700
| -46% | -$27K |
|
3441
Versus Systems
VS
$8.45M
| $30.5K | ﹤0.01% |
+13,100
| New | +$27.3K |
|
|
SYBX
3442
DELISTED
Synlogic
SYBX
| $30.2K | ﹤0.01% |
23,810
+300
| +1% | +$346 |
|
3443
Shattuck Labs
STTK
$735M
| $30.2K | ﹤0.01% |
38,100
+10,100
| +36% | +$9.79K |
|
3444
Cognition Therapeutics
CGTX
$98.9M
| $29.9K | ﹤0.01% |
96,400
+40,700
| +73% | +$13.7K |
|
|
QH
3445
Quhuo Limited Class A Ordinary Shares
QH
$11.7M
| $29.6K | ﹤0.01% |
274
+1
| +0.4% | +$112 |
|
3446
Lightwave Logic
LWLG
$1.12B
| $29.3K | ﹤0.01% |
+23,600
| New | +$24.8K |
|
|
MURA
3447
DELISTED
Mural Oncology
MURA
| $29.1K | ﹤0.01% |
+11,800
| New | +$27.8K |
|
3448
Aterian
ATER
$5.26M
| $28.8K | ﹤0.01% |
+17,347
| New | +$29.5K |
|
3449
Drilling Tools International
DTI
$86.8M
| $28.6K | ﹤0.01% |
10,040
-27,200
| -73% | -$67.7K |
|
|
PW
3450
Power REIT
PW
$2.93M
| $27.9K | ﹤0.01% |
2,582
-58
| -2% | -$653 |
|
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Jim Simons's Q2 2025 Portfolio in Review
As of Q2 2025, Jim Simons held 4,018 positions worth $75.2B, up 14% from $66.1B the previous quarter. Its ten largest holdings account for 12% of the portfolio.
Jim Simons's Q2 2025 filing shows 612 new, 1,577 increased, 1,314 reduced and 496 closed positions. Its largest new stake was UnitedHealth: 1,352,129 shares worth $422M. The largest sale was Broadcom, an estimated $527M.
By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 17% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Jim Simons's largest Q2 2025 buy was UnitedHealth: 1,352,129 shares worth $422M.
- Jim Simons added most to NVIDIA in Q2 2025, an estimated $798M increase.
- Jim Simons's biggest Q2 2025 reduction was Broadcom, cutting an estimated $527M.
- Jim Simons fully exited Advanced Micro Devices in Q2 2025, selling an estimated $328M.
- Jim Simons's ten largest holdings make up 12% of its $75.2B portfolio in Q2 2025.
- Jim Simons opened 612 new positions and closed 496 in Q2 2025.
- Jim Simons's portfolio value rose 14% quarter-over-quarter to $75.2B.
Based on Renaissance Technologies's 13F filing for Q2 2025, filed 13 Aug 2025.