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 | |
|---|---|---|---|---|---|---|
2901
enGene Therapeutics
ENGN
$114M
| $188K | ﹤0.01% |
+20,782
| New | +$167K |
|
2902
Beam Global
BEEM
$25.8M
| $186K | ﹤0.01% |
124,000
+90,300
| +268% | +$208K |
|
2903
Marker Therapeutics
MRKR
$19.3M
| $184K | ﹤0.01% |
123,650
+17,400
| +16% | +$19.7K |
|
2904
Integra LifeSciences
IART
$1.35B
| $183K | ﹤0.01% |
+14,760
| New | +$196K |
|
2905
eHealth
EHTH
$39.7M
| $182K | ﹤0.01% |
39,500
-166,800
| -81% | -$735K |
|
2906
Creative Realities
CREX
$39.3M
| $179K | ﹤0.01% |
68,702
-1,900
| -3% | -$5.27K |
|
2907
Cheche Group
CCG
$33.8M
| $179K | ﹤0.01% |
6,157
-2,311
| -27% | -$79.8K |
|
2908
Ark Restaurants
ARKR
$20.2M
| $177K | ﹤0.01% |
26,411
-1,100
| -4% | -$7.67K |
|
2909
Denali Therapeutics
DNLI
$4.04B
| $177K | ﹤0.01% |
10,700
-49,100
| -82% | -$829K |
|
|
SI
2910
Shoulder Innovations Inc
SI
$403M
| $176K | ﹤0.01% |
+12,300
| New | +$168K |
|
2911
Marti Technologies
MRT
$158M
| $173K | ﹤0.01% |
73,100
+7,444
| +11% | +$17.7K |
|
2912
Stem
STEM
$48.8M
| $169K | ﹤0.01% |
+11,200
| New | +$215K |
|
2913
Anixa Biosciences
ANIX
$110M
| $168K | ﹤0.01% |
53,873
+11,109
| +26% | +$45.5K |
|
2914
Outset Medical
OM
$84.6M
| $168K | ﹤0.01% |
45,205
+4,745
| +12% | +$40.7K |
|
|
AFCG
2915
AFC Gamma
AFCG
$64.3M
| $167K | ﹤0.01% |
58,500
-25,800
| -31% | -$81.9K |
|
2916
Cosmos Holdings
COSM
$12.9M
| $167K | ﹤0.01% |
334,575
+241,775
| +261% | +$180K |
|
|
LGO
2917
Largo
LGO
$75.1M
| $166K | ﹤0.01% |
176,766
+2,103
| +1% | +$2.5K |
|
|
TOYO
2918
TOYO Co
TOYO
$241M
| $166K | ﹤0.01% |
28,250
+4,250
| +18% | +$28.6K |
|
2919
James River Group Holdings
JRVR
$199M
| $165K | ﹤0.01% |
25,900
-1,500
| -5% | -$8.63K |
|
|
PPSI
2920
Pioneer Power Solutions
PPSI
$34.1M
| $164K | ﹤0.01% |
34,700
+9,948
| +40% | +$41.7K |
|
2921
Loop Industries
LOOP
$32.2M
| $163K | ﹤0.01% |
163,125
-76,175
| -32% | -$101K |
|
|
FWDI
2922
Forward Industries Inc
FWDI
$325M
| $161K | ﹤0.01% |
24,400
-35,620
| -59% | -$457K |
|
|
UCL
2923
uCloudlink Group
UCL
$28.6M
| $160K | ﹤0.01% |
97,705
-8,600
| -8% | -$18K |
|
|
NINE
2924
DELISTED
Nine Energy Service
NINE
| $160K | ﹤0.01% |
462,836
+13,500
| +3% | +$6.67K |
|
2925
UTStarcom
UTSI
$23M
| $160K | ﹤0.01% |
62,988
-7,100
| -10% | -$17.4K |
|
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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.