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 | |
|---|---|---|---|---|---|---|
|
TEM
1276
Tempus AI
TEM
$9.53B
| $5.24M | 0.01% |
88,800
-355,500
| -80% | -$27.8M |
|
1277
Addus HomeCare
ADUS
$2.18B
| $5.24M | 0.01% |
48,800
-53,800
| -52% | -$6.18M |
|
1278
Liberty Latin America Class C
LILAK
$1.66B
| $5.22M | 0.01% |
770,330
-34,430
| -4% | -$257K |
|
1279
Worthington Steel
WS
$1.95B
| $5.22M | 0.01% |
150,800
-16,500
| -10% | -$543K |
|
1280
Acacia Research
ACTG
$451M
| $5.22M | 0.01% |
1,395,300
-130,700
| -9% | -$469K |
|
1281
MSC Industrial Direct
MSM
$6.84B
| $5.21M | 0.01% |
62,000
-113,200
| -65% | -$9.81M |
|
1282
Flexsteel Industries
FLXS
$303M
| $5.2M | 0.01% |
131,800
-6,600
| -5% | -$257K |
|
1283
Idacorp
IDA
$8.23B
| $5.2M | 0.01% |
41,100
-87,100
| -68% | -$11.3M |
|
1284
Seanergy Maritime Holdings
SHIP
$361M
| $5.2M | 0.01% |
563,500
+3,800
| +0.7% | +$34.5K |
|
1285
OraSure Technologies
OSUR
$266M
| $5.19M | 0.01% |
2,145,003
-116,100
| -5% | -$305K |
|
1286
ICU Medical
ICUI
$4.56B
| $5.18M | 0.01% |
36,300
-33,100
| -48% | -$4.43M |
|
1287
CuriosityStream
CURI
$219M
| $5.17M | 0.01% |
1,359,900
+321,700
| +31% | +$1.43M |
|
1288
Enpro
NPO
$7.25B
| $5.16M | 0.01% |
24,100
+14,900
| +162% | +$3.3M |
|
1289
Harrow
HROW
$1.5B
| $5.14M | 0.01% |
104,979
-13,138
| -11% | -$552K |
|
1290
Cable One
CABO
$200M
| $5.13M | 0.01% |
45,500
-9,300
| -17% | -$1.27M |
|
1291
Cohen & Steers
CNS
$4.38B
| $5.12M | 0.01% |
81,512
+29,500
| +57% | +$1.92M |
|
1292
NEOS S&P 500 High Income ETF
SPYI
$11.4B
| $5.11M | 0.01% |
97,300
-8,971
| -8% | -$471K |
|
1293
LifeMD
LFMD
$164M
| $5.11M | 0.01% |
1,498,325
-135,500
| -8% | -$658K |
|
1294
United Fire Group
UFCS
$1.39B
| $5.11M | 0.01% |
140,510
+68,227
| +94% | +$2.33M |
|
1295
Ingevity
NGVT
$2.61B
| $5.1M | 0.01% |
86,200
+19,900
| +30% | +$1.08M |
|
1296
Innovative Solutions & Support
ISSC
$420M
| $5.1M | 0.01% |
269,093
-57,866
| -18% | -$659K |
|
1297
Vaalco Energy
EGY
$610M
| $5.08M | 0.01% |
1,395,390
-226,754
| -14% | -$839K |
|
1298
Fidelity Total Bond ETF
FBND
$27.3B
| $5.08M | 0.01% |
110,300
-170,400
| -61% | -$7.91M |
|
1299
J. Jill
JILL
$288M
| $5.07M | 0.01% |
369,400
-18,400
| -5% | -$278K |
|
1300
Lantheus
LNTH
$6.59B
| $5.04M | 0.01% |
75,782
+15,951
| +27% | +$928K |
|
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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.