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 | |
|---|---|---|---|---|---|---|
876
BigBear.ai
BBAI
$1.6B
| $14.9M | 0.02% |
2,290,451
-3,257,500
| -59% | -$20.8M |
|
877
Honda
HMC
$40.6B
| $14.9M | 0.02% |
484,200
-135,600
| -22% | -$4.42M |
|
878
Eos Energy Enterprises
EOSE
$1.51B
| $14.9M | 0.02% |
1,306,831
+1,185,303
| +975% | +$8.11M |
|
879
Ameriprise Financial
AMP
$49.9B
| $14.8M | 0.02% |
+30,200
| New | +$15.5M |
|
880
Genuine Parts
GPC
$18.5B
| $14.8M | 0.02% |
+106,500
| New | +$14.3M |
|
881
First Trust Senior Loan Fund ETF
FTSL
$2.33B
| $14.7M | 0.02% |
321,430
+15,130
| +5% | +$696K |
|
882
Phillips Edison & Co
PECO
$5.17B
| $14.7M | 0.02% |
427,902
+292,506
| +216% | +$10.1M |
|
883
GoodRx Holdings
GDRX
$1.27B
| $14.7M | 0.02% |
3,469,338
-129,100
| -4% | -$568K |
|
884
KBR
KBR
$4.8B
| $14.7M | 0.02% |
310,100
+90,400
| +41% | +$4.39M |
|
885
Valley National Bancorp
VLY
$8.25B
| $14.6M | 0.02% |
1,381,409
-2,373,800
| -63% | -$23.7M |
|
886
Repligen
RGEN
$9.45B
| $14.6M | 0.02% |
109,404
+43,100
| +65% | +$5.24M |
|
887
AMN Healthcare
AMN
$1.34B
| $14.6M | 0.02% |
754,900
+324,700
| +75% | +$6.34M |
|
888
Rayonier Advanced Materials
RYAM
$561M
| $14.6M | 0.02% |
2,022,244
-635,802
| -24% | -$3.28M |
|
889
Stantec
STN
$8.47B
| $14.5M | 0.02% |
134,100
+48,100
| +56% | +$5.25M |
|
|
CHYM
890
Chime Financial
CHYM
$12B
| $14.4M | 0.02% |
+714,900
| New | +$20.3M |
|
891
American Tower
AMT
$79.4B
| $14.4M | 0.02% |
+74,939
| New | +$15.6M |
|
892
Armstrong World Industries
AWI
$7.75B
| $14.4M | 0.02% |
+73,500
| New | +$13.7M |
|
893
Privia Health
PRVA
$2.75B
| $14.3M | 0.02% |
576,300
-2,800
| -0.5% | -$60.3K |
|
894
RLI Corp
RLI
$5.87B
| $14.3M | 0.02% |
219,900
+93,383
| +74% | +$6.32M |
|
895
Black Hills Corp
BKH
$5.58B
| $14.3M | 0.02% |
232,500
+60,400
| +35% | +$3.55M |
|
896
Southside Bancshares
SBSI
$979M
| $14.3M | 0.02% |
506,885
-67,700
| -12% | -$2.05M |
|
897
Prestige Consumer Healthcare
PBH
$2.43B
| $14.3M | 0.02% |
229,202
-176,602
| -44% | -$12.3M |
|
898
Alphatec Holdings
ATEC
$1.49B
| $14.2M | 0.02% |
979,000
+234,800
| +32% | +$3.27M |
|
899
Euronet Worldwide
EEFT
$2.66B
| $14.2M | 0.02% |
161,645
+35,445
| +28% | +$3.4M |
|
900
LSB Industries
LXU
$711M
| $14.2M | 0.02% |
1,800,393
+33,800
| +2% | +$274K |
|
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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.