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 | |
|---|---|---|---|---|---|---|
|
PSIX
1076
Power Solutions International
PSIX
$947M
| $10.5M | 0.01% |
106,498
+50,102
| +89% | +$4.44M |
|
|
DRD
1077
DRDGold
DRD
$2.06B
| $10.5M | 0.01% |
378,913
-117,600
| -24% | -$2.1M |
|
1078
Quanex
NX
$1B
| $10.4M | 0.01% |
733,891
-126,916
| -15% | -$2.37M |
|
1079
Generac Holdings
GNRC
$12.8B
| $10.4M | 0.01% |
+62,300
| New | +$10.9M |
|
1080
AngioDynamics
ANGO
$647M
| $10.4M | 0.01% |
933,383
-129,346
| -12% | -$1.25M |
|
1081
Ooma
OOMA
$553M
| $10.4M | 0.01% |
868,803
-46,000
| -5% | -$563K |
|
1082
Novavax
NVAX
$1.34B
| $10.4M | 0.01% |
1,196,750
+529,103
| +79% | +$4.12M |
|
1083
Worthington Enterprises
WOR
$2.78B
| $10.3M | 0.01% |
186,200
+51,500
| +38% | +$3.25M |
|
1084
TriMas Corp
TRS
$1.41B
| $10.3M | 0.01% |
265,900
+170,300
| +178% | +$6.05M |
|
1085
SPX Corp
SPXC
$10.9B
| $10.2M | 0.01% |
+54,800
| New | +$10.1M |
|
1086
O-I Glass
OI
$1.05B
| $10.2M | 0.01% |
786,000
-92,800
| -11% | -$1.27M |
|
1087
LivaNova
LIVN
$4.53B
| $10.2M | 0.01% |
194,594
+4,900
| +3% | +$247K |
|
1088
TriNet
TNET
$3.07B
| $10.2M | 0.01% |
151,800
+50,900
| +50% | +$3.46M |
|
1089
DXP Enterprises
DXPE
$3.04B
| $10.1M | 0.01% |
85,109
+8,809
| +12% | +$985K |
|
1090
NVE Corp
NVEC
$563M
| $10.1M | 0.01% |
154,400
+2,500
| +2% | +$169K |
|
1091
Simply Good Foods
SMPL
$968M
| $10.1M | 0.01% |
405,800
+271,300
| +202% | +$8.01M |
|
|
EFOR
1092
Everforth Inc
EFOR
$1.34B
| $10.1M | 0.01% |
212,494
+40,300
| +23% | +$2.06M |
|
|
CDTX
1093
DELISTED
Cidara Therapeutics
CDTX
| $9.98M | 0.01% |
104,260
-52,517
| -33% | -$3.35M |
|
1094
ICF International
ICFI
$1.6B
| $9.98M | 0.01% |
107,500
+6,100
| +6% | +$565K |
|
1095
Invesco National AMT-Free Municipal Bond ETF
PZA
$4.27B
| $9.96M | 0.01% |
431,230
+50,930
| +13% | +$1.14M |
|
1096
First Trust Smith Unconstrained Bond ETF
UCON
$3.29B
| $9.95M | 0.01% |
395,200
-178,033
| -31% | -$4.45M |
|
1097
Exponent
EXPO
$3.22B
| $9.92M | 0.01% |
142,800
-130,300
| -48% | -$9.31M |
|
1098
iShares Core Universal USD Bond ETF
IUSB
$43.3B
| $9.89M | 0.01% |
211,800
+50,900
| +32% | +$2.35M |
|
1099
Fox Class A
FOXA
$27.5B
| $9.88M | 0.01% |
156,700
-287,000
| -65% | -$16.6M |
|
1100
Center Bancorp
CNOB
$1.81B
| $9.88M | 0.01% |
398,146
-61,600
| -13% | -$1.52M |
|
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.