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 | |
|---|---|---|---|---|---|---|
|
LADR
1626
Ladder Capital
LADR
$1.27B
| $4.03M | 0.01% |
+369,093
| New | +$4.15M |
|
|
BCYC
1627
Bicycle Therapeutics
BCYC
$273M
| $4.01M | 0.01% |
518,700
+200,300
| +63% | +$1.51M |
|
1628
Fidelity MSCI Energy Index ETF
FENY
$2.09B
| $3.99M | 0.01% |
+161,600
| New | +$3.91M |
|
|
CNTA
1629
DELISTED
Centessa Pharmaceuticals
CNTA
| $3.99M | 0.01% |
164,600
-220,300
| -57% | -$3.92M |
|
|
KWY
1630
Kingsway Corp
KWY
$285M
| $3.97M | 0.01% |
271,415
+8,700
| +3% | +$125K |
|
1631
iShares Biotechnology ETF
IBB
$9.73B
| $3.97M | 0.01% |
+27,482
| New | +$3.75M |
|
1632
Vanguard Morningstar Mid-Cap ETF
VO
$111B
| $3.97M | 0.01% |
54,000
-28,400
| -34% | -$2.04M |
|
1633
Espey Mfg & Electronics Corp
ESP
$192M
| $3.96M | 0.01% |
100,065
-7,047
| -7% | -$329K |
|
1634
Acco Brands
ACCO
$401M
| $3.96M | 0.01% |
992,047
+285,747
| +40% | +$1.11M |
|
|
SPR
1635
DELISTED
Spirit AeroSystems
SPR
| $3.95M | 0.01% |
+102,300
| New | +$4.09M |
|
|
PPTA
1636
Perpetua Resources
PPTA
$3.16B
| $3.94M | 0.01% |
+194,693
| New | +$3.29M |
|
1637
Assembly Biosciences
ASMB
$653M
| $3.93M | 0.01% |
153,611
+46,090
| +43% | +$1.01M |
|
1638
CoreCivic
CXW
$3.25B
| $3.93M | 0.01% |
193,103
+115,400
| +149% | +$2.39M |
|
1639
Mission Produce
AVO
$1.15B
| $3.92M | 0.01% |
326,000
+29,000
| +10% | +$358K |
|
1640
Emcor
EME
$36.9B
| $3.9M | 0.01% |
6,000
-17,500
| -74% | -$10.6M |
|
1641
Dimensional US High Profitability ETF
DUHP
$12.8B
| $3.89M | 0.01% |
103,100
+47,000
| +84% | +$1.72M |
|
1642
Digi International
DGII
$3.23B
| $3.87M | 0.01% |
106,184
+17,601
| +20% | +$605K |
|
1643
Backblaze
BLZE
$1.18B
| $3.87M | 0.01% |
416,816
-21,100
| -5% | -$155K |
|
|
SCHR
1644
Schwab Intermediately-Term US Treasury ETF
SCHR
$13.3B
| $3.87M | 0.01% |
153,900
+117,300
| +320% | +$2.93M |
|
1645
Direxion Daily Financial Bull 3x ETF
FAS
$2.49B
| $3.86M | 0.01% |
+21,700
| New | +$3.72M |
|
|
GRDN
1646
Guardian Pharmacy Services
GRDN
$2.43B
| $3.85M | 0.01% |
146,600
+109,900
| +299% | +$2.62M |
|
1647
Primoris Services
PRIM
$4.48B
| $3.84M | 0.01% |
27,991
+15,500
| +124% | +$1.66M |
|
1648
Evolus
EOLS
$538M
| $3.84M | 0.01% |
626,000
+284,600
| +83% | +$2.22M |
|
1649
iShares Core S&P US Value ETF
IUSV
$28B
| $3.83M | 0.01% |
38,300
+7,300
| +24% | +$711K |
|
|
PRSU
1650
Pursuit Attractions and Hospitality Inc
PRSU
$1.31B
| $3.82M | 0.01% |
105,500
-7,400
| -7% | -$250K |
|
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.