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 |
Costco
COST
|
+$616M |
| 2 |
Netflix
NFLX
|
+$481M |
| 3 |
Micron Technology
MU
|
+$416M |
| 4 |
Tesla
TSLA
|
+$416M |
| 5 |
Procter & Gamble
PG
|
+$322M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$885M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$660M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$463M |
| 4 |
Applovin
APP
|
+$430M |
| 5 |
Meta Platforms (Facebook)
META
|
+$354M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 20.84% |
| 2 | Healthcare | 15.77% |
| 3 | Consumer Discretionary | 13.88% |
| 4 | Industrials | 9.94% |
| 5 | Financials | 8.79% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1701
Caribou Biosciences
CRBU
$153M
| $2.61M | ﹤0.01% |
1,639,857
+859,436
| +110% | +$1.8M |
|
|
FBLA
1702
FB Bancorp
FBLA
$253M
| $2.61M | ﹤0.01% |
202,900
+159,700
| +370% | +$1.98M |
|
1703
Entrada Therapeutics
TRDA
$288M
| $2.6M | ﹤0.01% |
252,635
-341,665
| -57% | -$2.88M |
|
1704
Neumora Therapeutics
NMRA
$304M
| $2.59M | ﹤0.01% |
1,445,902
+281,926
| +24% | +$617K |
|
1705
ZTO Express
ZTO
$17.5B
| $2.58M | ﹤0.01% |
123,700
-196,300
| -61% | -$3.89M |
|
1706
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$3.62B
| $2.58M | ﹤0.01% |
40,319
+28,319
| +236% | +$1.83M |
|
1707
Taylor Devices
TAYD
$171M
| $2.58M | ﹤0.01% |
44,162
+700
| +2% | +$33.9K |
|
1708
Envela
ELA
$424M
| $2.57M | ﹤0.01% |
192,104
-6,600
| -3% | -$68.9K |
|
|
STLN
1709
Starling Oncology, Inc. Common Stock
STLN
$659M
| $2.57M | ﹤0.01% |
721,900
-28,600
| -4% | -$106K |
|
1710
Invesco Actively Managed Exch-Traded Commodity Fd Tr Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF
PDBC
$6.62B
| $2.57M | ﹤0.01% |
+193,858
| New | +$2.62M |
|
1711
OceanFirst Financial
OCFC
$1.9B
| $2.57M | ﹤0.01% |
143,043
-21,300
| -13% | -$398K |
|
1712
Virtus Investment Partners
VRTS
$1.13B
| $2.57M | ﹤0.01% |
15,729
+13,200
| +522% | +$2.23M |
|
1713
NBT Bancorp
NBTB
$2.8B
| $2.56M | ﹤0.01% |
61,773
-7,600
| -11% | -$316K |
|
1714
West Fraser Timber
WFG
$5.43B
| $2.56M | ﹤0.01% |
41,900
+14,000
| +50% | +$876K |
|
|
DCBO
1715
Docebo
DCBO
$583M
| $2.55M | ﹤0.01% |
115,031
-14,102
| -11% | -$337K |
|
|
RPTX
1716
DELISTED
Repare Therapeutics
RPTX
| $2.55M | ﹤0.01% |
981,360
+257,200
| +36% | +$518K |
|
1717
Mistras Group
MG
$586M
| $2.55M | ﹤0.01% |
201,600
+20,800
| +12% | +$235K |
|
1718
Humana
HUM
$45.8B
| $2.55M | ﹤0.01% |
9,953
-426,847
| -98% | -$112M |
|
1719
Invivyd
IVVD
$207M
| $2.54M | ﹤0.01% |
+1,026,620
| New | +$2.14M |
|
1720
Vertical Aerospace
EVTL
$106M
| $2.53M | ﹤0.01% |
474,400
+27,200
| +6% | +$138K |
|
|
CURB
1721
Curbline Properties
CURB
$3.48B
| $2.53M | ﹤0.01% |
+108,817
| New | +$2.54M |
|
|
ABX
1722
Abacus Global Management
ABX
$920M
| $2.52M | ﹤0.01% |
295,000
-166,900
| -36% | -$1.1M |
|
1723
CION Investment
CION
$373M
| $2.52M | ﹤0.01% |
260,800
-46,700
| -15% | -$450K |
|
|
MITT
1724
TPG Mortgage Investment Trust
MITT
$214M
| $2.52M | ﹤0.01% |
295,741
-50,600
| -15% | -$397K |
|
1725
Teradata
TDC
$2.59B
| $2.52M | ﹤0.01% |
82,632
-705,963
| -90% | -$18.5M |
|
Similar funds
Jim Simons's Q4 2025 Portfolio in Review
As of Q4 2025, Jim Simons held 3,923 positions worth $64.5B, down 15% from $75.8B the previous quarter. Its ten largest holdings account for 12% of the portfolio.
Jim Simons withdrew a net $10.1B in Q4 2025, closing 737 positions and reducing 1,682 holdings. Its most notable exit was Meta Platforms (Facebook), an estimated $354M position sold in full.
By sector, the portfolio is most concentrated in Technology at 21% of assets, down from 22% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Jim Simons opened a new position in ServiceNow worth $204M.
- Jim Simons's largest Q4 2025 buy was ServiceNow: 1,331,977 shares worth $204M.
- Jim Simons added most to Costco in Q4 2025, an estimated $616M increase.
- Jim Simons's biggest Q4 2025 reduction was NVIDIA, cutting an estimated $885M.
- Jim Simons fully exited Meta Platforms (Facebook) in Q4 2025, selling an estimated $354M.
- Jim Simons's ten largest holdings make up 12% of its $64.5B portfolio in Q4 2025.
- Jim Simons opened 466 new positions and closed 737 in Q4 2025.
- Jim Simons's portfolio value fell 15% quarter-over-quarter to $64.5B.
Based on Renaissance Technologies's 13F filing for Q4 2025, filed 12 Feb 2026.