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 | |
|---|---|---|---|---|---|---|
3276
Broadwind
BWEN
$129M
| $118K | ﹤0.01% |
65,400
+4,200
| +7% | +$7.09K |
|
3277
Sono-Tek
SOTK
$82M
| $116K | ﹤0.01% |
31,000
-1,200
| -4% | -$4.55K |
|
|
CMBM
3278
DELISTED
Cambium Networks
CMBM
| $116K | ﹤0.01% |
286,427
-165,056
| -37% | -$64.2K |
|
3279
Loop Industries
LOOP
$32.2M
| $116K | ﹤0.01% |
+81,428
| New | +$98.4K |
|
3280
Q32 Bio
QTTB
$458M
| $115K | ﹤0.01% |
+77,000
| New | +$131K |
|
|
DRRX
3281
DELISTED
DURECT Corp
DRRX
| $113K | ﹤0.01% |
177,766
+5,300
| +3% | +$3.42K |
|
3282
Wheels Up
UP
$190M
| $112K | ﹤0.01% |
+5,225
| New | +$128K |
|
3283
Xilio Therapeutics
XLO
$59.6M
| $112K | ﹤0.01% |
11,729
-964
| -8% | -$10.2K |
|
3284
Freightos
CRGO
$64.6M
| $112K | ﹤0.01% |
45,900
+17,400
| +61% | +$38.6K |
|
3285
Ribbon Communications
RBBN
$372M
| $110K | ﹤0.01% |
27,500
-117,312
| -81% | -$423K |
|
3286
Lipocine
LPCN
$17M
| $110K | ﹤0.01% |
34,797
-2,713
| -7% | -$8.8K |
|
3287
SCYNEXIS
SCYX
$47.9M
| $108K | ﹤0.01% |
19,975
+275
| +1% | +$1.93K |
|
|
HLVX
3288
DELISTED
HilleVax
HLVX
| $108K | ﹤0.01% |
54,100
+26,500
| +96% | +$48.5K |
|
3289
Vertical Aerospace
EVTL
$107M
| $107K | ﹤0.01% |
15,800
-6,909
| -30% | -$32.4K |
|
3290
Marker Therapeutics
MRKR
$19.3M
| $106K | ﹤0.01% |
69,442
-14,073
| -17% | -$18.1K |
|
3291
Forafric Global
AFRI
$291M
| $106K | ﹤0.01% |
13,600
+1,000
| +8% | +$8.05K |
|
3292
Bolt Biotherapeutics
BOLT
$6.63M
| $106K | ﹤0.01% |
18,325
+2,618
| +17% | +$17.3K |
|
3293
BTCS Inc
BTCS
$54.3M
| $105K | ﹤0.01% |
+47,900
| New | +$102K |
|
3294
Oric Pharmaceuticals
ORIC
$1.42B
| $104K | ﹤0.01% |
+10,200
| New | +$68.5K |
|
3295
Arena Group
AREN
$61.9M
| $103K | ﹤0.01% |
16,600
-21,200
| -56% | -$104K |
|
3296
Codere Online
CDRO
$410M
| $101K | ﹤0.01% |
+11,900
| New | +$88.5K |
|
3297
Southland Holdings
SLND
$29.1M
| $100K | ﹤0.01% |
+24,000
| New | +$84.7K |
|
|
BNR
3298
Burning Rock Biotech
BNR
$105M
| $100K | ﹤0.01% |
31,717
| – | – |
|
3299
Dominari Holdings
DOMH
$70.8M
| $97.5K | ﹤0.01% |
17,926
-30,200
| -63% | -$147K |
|
3300
Siebert Financial
SIEB
$71.1M
| $97.2K | ﹤0.01% |
22,000
-16,800
| -43% | -$68.2K |
|
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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.