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 |
Alphabet (Google) Class A
GOOGL
|
+$546M |
| 2 |
Microsoft
MSFT
|
+$480M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$362M |
| 4 |
Meta Platforms (Facebook)
META
|
+$350M |
| 5 |
Coca-Cola
KO
|
+$266M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Robinhood
HOOD
|
+$1.04B |
| 2 |
Palantir
PLTR
|
+$800M |
| 3 |
Apple
AAPL
|
+$516M |
| 4 |
Netflix
NFLX
|
+$326M |
| 5 |
NVIDIA
NVDA
|
+$313M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 21.71% |
| 2 | Healthcare | 15.16% |
| 3 | Consumer Discretionary | 11.81% |
| 4 | Communication Services | 10.53% |
| 5 | Financials | 9.27% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3026
Southland Holdings
SLND
$29.1M
| $280K | ﹤0.01% |
65,250
+41,250
| +172% | +$179K |
|
3027
Alpha Tau Medical
DRTS
$1.25B
| $279K | ﹤0.01% |
61,900
+32,500
| +111% | +$111K |
|
3028
Bally's
BALY
$671M
| $279K | ﹤0.01% |
+25,137
| New | +$253K |
|
3029
PDS Biotechnology
PDSB
$13M
| $279K | ﹤0.01% |
275,861
+170,174
| +161% | +$200K |
|
3030
News Corp Class B
NWS
$17.7B
| $279K | ﹤0.01% |
8,063
-223,430
| -97% | -$7.54M |
|
3031
Highway Holdings
HIHO
$5.27M
| $278K | ﹤0.01% |
169,315
-600
| -0.4% | -$993 |
|
3032
SiriusPoint
SPNT
$2.66B
| $277K | ﹤0.01% |
15,300
-110,800
| -88% | -$2.07M |
|
3033
Compass Therapeutics
CMPX
$407M
| $277K | ﹤0.01% |
79,000
-145,600
| -65% | -$460K |
|
|
OMDA
3034
Omada Health Inc
OMDA
$1.44B
| $276K | ﹤0.01% |
+12,500
| New | +$256K |
|
|
BOLD
3035
Boundless Bio
BOLD
$63.2M
| $275K | ﹤0.01% |
223,562
+102,562
| +85% | +$118K |
|
3036
Orange County Bancorp
OBT
$522M
| $275K | ﹤0.01% |
10,900
-10,000
| -48% | -$261K |
|
|
BNR
3037
Burning Rock Biotech
BNR
$105M
| $274K | ﹤0.01% |
31,717
| – | – |
|
3038
Codere Online
CDRO
$410M
| $274K | ﹤0.01% |
39,700
+27,800
| +234% | +$224K |
|
3039
Dimensional US Small Cap ETF
DFAS
$15.9B
| $274K | ﹤0.01% |
4,000
-16,400
| -80% | -$1.09M |
|
3040
Broadcom
AVGO
$1.99T
| $272K | ﹤0.01% |
827
+63
| +8% | +$19.3K |
|
3041
Educational Development Corp
EDUC
$11.8M
| $272K | ﹤0.01% |
204,545
-1,400
| -0.7% | -$1.75K |
|
3042
Atara Biotherapeutics
ATRA
$83.1M
| $271K | ﹤0.01% |
18,936
+2,000
| +12% | +$23K |
|
3043
Amylyx Pharmaceuticals
AMLX
$2.6B
| $270K | ﹤0.01% |
19,900
-376,300
| -95% | -$3.54M |
|
3044
Vince Holding Corp
VNCE
$77.6M
| $270K | ﹤0.01% |
80,850
-10,400
| -11% | -$19.3K |
|
3045
Luxfer Holdings
LXFR
$457M
| $270K | ﹤0.01% |
19,400
+3,200
| +20% | +$41.1K |
|
|
PWCM
3046
PowerCompute, Inc. Common Stock
PWCM
$1.42M
| $268K | ﹤0.01% |
+9,408
| New | +$454K |
|
3047
Invesco S&P 500 Equal Weight Technology ETF
RSPT
$6.05B
| $267K | ﹤0.01% |
+6,000
| New | +$252K |
|
|
LITB
3048
LightInTheBox
LITB
$56.7M
| $267K | ﹤0.01% |
127,333
-200
| -0.2% | -$297 |
|
3049
Atomera
ATOM
$212M
| $267K | ﹤0.01% |
+60,300
| New | +$248K |
|
3050
CPI Aerostructures
CVU
$75M
| $266K | ﹤0.01% |
105,646
-12,254
| -10% | -$36.2K |
|
Similar funds
Jim Simons's Q3 2025 Portfolio in Review
As of Q3 2025, Jim Simons held 4,038 positions worth $75.8B, up 0.77% from $75.2B the previous quarter. Its ten largest holdings account for 11% of the portfolio.
Jim Simons withdrew a net $5.41B in Q3 2025, closing 581 positions and reducing 1,457 holdings. Its most notable exit was GE Aerospace, an estimated $235M position sold in full.
By sector, the portfolio is most concentrated in Technology at 22% of assets, up from 20% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Jim Simons opened a new position in Alphabet (Google) Class C worth $419M.
- Jim Simons's largest Q3 2025 buy was Alphabet (Google) Class C: 1,720,002 shares worth $419M.
- Jim Simons added most to Alphabet (Google) Class A in Q3 2025, an estimated $546M increase.
- Jim Simons's biggest Q3 2025 reduction was Robinhood, cutting an estimated $1.04B.
- Jim Simons fully exited GE Aerospace in Q3 2025, selling an estimated $235M.
- Jim Simons's ten largest holdings make up 11% of its $75.8B portfolio in Q3 2025.
- Jim Simons opened 516 new positions and closed 581 in Q3 2025.
- Jim Simons's portfolio value rose 0.77% quarter-over-quarter to $75.8B.
Based on Renaissance Technologies's 13F filing for Q3 2025, filed 13 Nov 2025.