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 | |
|---|---|---|---|---|---|---|
3301
Xenetic Biosciences
XBIO
$7.56M
| $97K | ﹤0.01% |
24,750
-2,014
| -8% | -$5.82K |
|
|
RSVR
3302
Reservoir Media
RSVR
$646M
| $96.6K | ﹤0.01% |
12,600
+200
| +2% | +$1.47K |
|
|
GURE
3303
Gulf Resources
GURE
$5.2M
| $96.4K | ﹤0.01% |
14,344
-474
| -3% | -$3.18K |
|
|
RTB
3304
RTB Digital
RTB
$226M
| $95.3K | ﹤0.01% |
3,199
+2,085
| +187% | +$58.9K |
|
3305
Yunhong Green CTI Ltd
YHGJ
$9.02M
| $94.7K | ﹤0.01% |
11,157
-210
| -2% | -$1.9K |
|
3306
GT Biopharma
GTBP
$10.9M
| $94.2K | ﹤0.01% |
+26,300
| New | +$68K |
|
|
FLX
3307
BingEx Ltd
FLX
$151M
| $93.2K | ﹤0.01% |
+29,600
| New | +$77.5K |
|
|
RJET
3308
Republic Airways Holdings
RJET
$962M
| $93.2K | ﹤0.01% |
6,680
-6,508
| -49% | -$98.8K |
|
|
YI
3309
111 Inc
YI
$33.3M
| $92.9K | ﹤0.01% |
13,014
+200
| +2% | +$1.57K |
|
3310
Stereotaxis
STXS
$139M
| $92.9K | ﹤0.01% |
43,800
-78,309
| -64% | -$159K |
|
3311
ABVC BioPharma
ABVC
$25M
| $92.8K | ﹤0.01% |
+41,706
| New | +$56.8K |
|
3312
Immunic
IMUX
$217M
| $92.2K | ﹤0.01% |
13,215
-53,731
| -80% | -$493K |
|
3313
Alpha Tau Medical
DRTS
$1.25B
| $91.7K | ﹤0.01% |
+29,400
| New | +$82.8K |
|
3314
Anixa Biosciences
ANIX
$110M
| $91.3K | ﹤0.01% |
27,673
+6,200
| +29% | +$17.7K |
|
|
PPSI
3315
Pioneer Power Solutions
PPSI
$34.1M
| $91.1K | ﹤0.01% |
+33,144
| New | +$89K |
|
3316
Cue Biopharma
CUE
$128M
| $91.1K | ﹤0.01% |
4,449
+3,217
| +261% | +$68.6K |
|
3317
Bridgford Foods
BRID
$57.4M
| $90.9K | ﹤0.01% |
11,500
| – | – |
|
|
LGO
3318
Largo
LGO
$75.1M
| $90.7K | ﹤0.01% |
70,300
+34,900
| +99% | +$48.9K |
|
3319
Relmada Therapeutics
RLMD
$507M
| $90.1K | ﹤0.01% |
150,100
+26,000
| +21% | +$13.3K |
|
3320
SemiLEDS
LEDS
$19.9M
| $89.3K | ﹤0.01% |
34,100
+18,200
| +114% | +$44.7K |
|
|
CARV
3321
DELISTED
Carver Bancorp
CARV
| $87K | ﹤0.01% |
50,300
+3,800
| +8% | +$5.54K |
|
3322
Castor Maritime
CTRM
$20.2M
| $87K | ﹤0.01% |
40,669
+1,000
| +3% | +$2.23K |
|
3323
DarioHealth
DRIO
$72.9M
| $87K | ﹤0.01% |
6,490
+610
| +10% | +$8.46K |
|
3324
Equillium
EQ
$138M
| $86.4K | ﹤0.01% |
274,100
+4,600
| +2% | +$1.84K |
|
|
STRM
3325
DELISTED
Streamline Health Solutions
STRM
| $84.9K | ﹤0.01% |
16,357
-300
| -2% | -$1.03K |
|
Similar funds
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.