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 | |
|---|---|---|---|---|---|---|
1951
iShares Russell 3000 ETF
IWV
$20.5B
| $2.39M | ﹤0.01% |
6,300
+200
| +3% | +$72.9K |
|
1952
Chemung Financial Corp
CHMG
$405M
| $2.39M | ﹤0.01% |
45,422
-4,000
| -8% | -$209K |
|
1953
Sinclair Inc
SBGI
$1.07B
| $2.38M | ﹤0.01% |
157,871
-229
| -0.1% | -$3.29K |
|
1954
Cavco Industries
CVCO
$4.65B
| $2.38M | ﹤0.01% |
4,100
-8,409
| -67% | -$4.11M |
|
1955
Tyra Biosciences
TYRA
$1.51B
| $2.38M | ﹤0.01% |
170,100
+35,000
| +26% | +$399K |
|
|
GRP.U
1956
DELISTED
Granite Real Estate Investment Trust
GRP.U
| $2.37M | ﹤0.01% |
42,600
-500
| -1% | -$27.4K |
|
1957
Nkarta
NKTX
$167M
| $2.37M | ﹤0.01% |
1,145,077
+448,705
| +64% | +$921K |
|
1958
RXO
RXO
$3.88B
| $2.37M | ﹤0.01% |
154,100
-1,400
| -0.9% | -$22.6K |
|
1959
Immunome
IMNM
$3.09B
| $2.37M | ﹤0.01% |
202,300
+102,928
| +104% | +$1.02M |
|
1960
PennyMac Financial
PFSI
$4.05B
| $2.37M | ﹤0.01% |
19,100
-50,100
| -72% | -$5.42M |
|
1961
Stepan Co
SCL
$1.48B
| $2.37M | ﹤0.01% |
+49,600
| New | +$2.57M |
|
1962
YieldMax MSTR Option Income Strategy ETF
MSTY
$723M
| $2.36M | ﹤0.01% |
33,820
-2,740
| -7% | -$249K |
|
1963
ECARX Holdings
ECX
$421M
| $2.36M | ﹤0.01% |
1,174,300
+385,400
| +49% | +$684K |
|
1964
Astrana Health
ASTH
$2.02B
| $2.35M | ﹤0.01% |
82,800
-12,800
| -13% | -$347K |
|
1965
ESCO Technologies
ESE
$7.92B
| $2.34M | ﹤0.01% |
11,100
+8,500
| +327% | +$1.68M |
|
|
FLOC
1966
Flowco Holdings
FLOC
$1.04B
| $2.34M | ﹤0.01% |
157,400
-46,300
| -23% | -$783K |
|
|
AUGO
1967
Aura Minerals Inc
AUGO
$6.37B
| $2.34M | ﹤0.01% |
+64,727
| New | +$1.86M |
|
|
SNCY
1968
DELISTED
Sun Country Airlines
SNCY
| $2.33M | ﹤0.01% |
197,200
+94,800
| +93% | +$1.17M |
|
1969
PDF Solutions
PDFS
$2.15B
| $2.33M | ﹤0.01% |
90,100
+20,800
| +30% | +$454K |
|
|
RPC
1970
Ridgepost Capital
RPC
$956M
| $2.33M | ﹤0.01% |
213,750
-161,200
| -43% | -$1.92M |
|
1971
Everspin Technologies
MRAM
$460M
| $2.33M | ﹤0.01% |
249,767
+6,500
| +3% | +$44.2K |
|
1972
JPMorgan Hedged Equity Laddered Overlay ETF
HELO
$4.75B
| $2.32M | ﹤0.01% |
35,720
+220
| +0.6% | +$14K |
|
1973
Vertical Aerospace
EVTL
$106M
| $2.32M | ﹤0.01% |
447,200
+431,400
| +2,730% | +$2.4M |
|
1974
ARK Genomic Revolution ETF
ARKG
$1.74B
| $2.31M | ﹤0.01% |
+83,300
| New | +$2.1M |
|
1975
Global Water Resources
GWRS
$247M
| $2.31M | ﹤0.01% |
224,147
-13,300
| -6% | -$133K |
|
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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.