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 | |
|---|---|---|---|---|---|---|
2401
Achieve Life Sciences
ACHV
$744M
| $758K | ﹤0.01% |
152,460
-158,304
| -51% | -$690K |
|
2402
Mastech Digital
MHH
$95.3M
| $755K | ﹤0.01% |
108,127
-9,900
| -8% | -$71.2K |
|
2403
Shenandoah Telecom
SHEN
$744M
| $753K | ﹤0.01% |
65,100
-50,600
| -44% | -$598K |
|
|
FURY
2404
Fury Gold Mines
FURY
$116M
| $752K | ﹤0.01% |
1,274,885
+334,385
| +36% | +$206K |
|
2405
Richtech Robotics
RR
$385M
| $748K | ﹤0.01% |
+231,566
| New | +$1.02M |
|
2406
Context Therapeutics
CNTX
$46.5M
| $747K | ﹤0.01% |
508,329
+188,202
| +59% | +$220K |
|
2407
Motorcar Parts of America
MPAA
$235M
| $747K | ﹤0.01% |
60,500
-26,100
| -30% | -$376K |
|
2408
Monopar Therapeutics
MNPR
$741M
| $746K | ﹤0.01% |
+11,431
| New | +$934K |
|
2409
Instil Bio
TIL
$49.3M
| $746K | ﹤0.01% |
+67,800
| New | +$1M |
|
2410
Healthcare Services Group
HCSG
$1.45B
| $746K | ﹤0.01% |
39,004
-136,360
| -78% | -$2.45M |
|
2411
Oak Valley Bancorp
OVLY
$288M
| $745K | ﹤0.01% |
24,773
-200
| -0.8% | -$5.64K |
|
2412
Columbia Sportswear
COLM
$2.96B
| $744K | ﹤0.01% |
13,502
-76,100
| -85% | -$4.07M |
|
|
KLRS
2413
Kalaris Therapeutics
KLRS
$92.4M
| $741K | ﹤0.01% |
87,751
-25,000
| -22% | -$160K |
|
2414
Personalis
PSNL
$1.54B
| $740K | ﹤0.01% |
92,994
-360,049
| -79% | -$3.15M |
|
2415
Inseego
INSG
$77.7M
| $738K | ﹤0.01% |
71,817
+14,071
| +24% | +$183K |
|
2416
Arcturus Therapeutics
ARCT
$223M
| $735K | ﹤0.01% |
+119,905
| New | +$1.29M |
|
|
PAL
2417
Proficient Auto Logistics
PAL
$154M
| $731K | ﹤0.01% |
75,800
+55,004
| +264% | +$432K |
|
|
LNKB
2418
DELISTED
LINKBANCORP
LNKB
| $730K | ﹤0.01% |
88,400
+59,200
| +203% | +$445K |
|
2419
Weyco Group
WEYS
$437M
| $729K | ﹤0.01% |
23,826
-1,000
| -4% | -$30.6K |
|
|
SEG
2420
Seaport Entertainment Group
SEG
$366M
| $728K | ﹤0.01% |
+36,800
| New | +$825K |
|
|
FNGU
2421
MicroSectors FANG+ 3x Leveraged ETNs due Feb 17 2045
FNGU
$2.72B
| $725K | ﹤0.01% |
+28,700
| New | +$829K |
|
|
GLDG
2422
GoldMining Inc
GLDG
$226M
| $724K | ﹤0.01% |
579,031
-39,669
| -6% | -$55.3K |
|
2423
GSI Technology
GSIT
$260M
| $722K | ﹤0.01% |
116,301
-269,608
| -70% | -$1.92M |
|
2424
Carter Bankshares
CARE
$757M
| $722K | ﹤0.01% |
36,700
+3,700
| +11% | +$69K |
|
2425
Xtant Medical Holdings
XTNT
$43.8M
| $721K | ﹤0.01% |
919,860
+205,945
| +29% | +$150K |
|
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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.