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 | |
|---|---|---|---|---|---|---|
2326
Spruce Power Holding Corp
SPRU
$33.6M
| $928K | ﹤0.01% |
182,333
+30,013
| +20% | +$122K |
|
2327
Thryv Holdings
THRY
$96.9M
| $927K | ﹤0.01% |
153,200
+78,600
| +105% | +$622K |
|
2328
ImmuCell
ICCC
$98.6M
| $927K | ﹤0.01% |
150,689
-6,600
| -4% | -$38.9K |
|
2329
LGL Group
LGL
$95.2M
| $925K | ﹤0.01% |
160,821
-6,200
| -4% | -$37.6K |
|
2330
ARK Blockchain & Fintech Innovation ETF
ARKF
$782M
| $924K | ﹤0.01% |
19,400
-3,700
| -16% | -$193K |
|
2331
Xponential Fitness
XPOF
$206M
| $916K | ﹤0.01% |
111,300
-99,800
| -47% | -$709K |
|
2332
Hennessy Advisors
HNNA
$79M
| $916K | ﹤0.01% |
95,389
-399
| -0.4% | -$3.95K |
|
2333
Vermilion Energy
VET
$1.72B
| $912K | ﹤0.01% |
109,300
-108,800
| -50% | -$898K |
|
2334
Kornit Digital
KRNT
$827M
| $910K | ﹤0.01% |
63,300
+5,600
| +10% | +$76.7K |
|
2335
ACNB Corp
ACNB
$660M
| $907K | ﹤0.01% |
18,756
-5,900
| -24% | -$278K |
|
|
AMWD
2336
DELISTED
American Woodmark
AMWD
| $906K | ﹤0.01% |
16,800
-13,300
| -44% | -$779K |
|
2337
Solitario Resources
XPL
$73.9M
| $903K | ﹤0.01% |
1,295,706
+178,035
| +16% | +$118K |
|
2338
Lucid Diagnostics
LUCD
$184M
| $901K | ﹤0.01% |
826,527
+532,894
| +181% | +$596K |
|
2339
AstroNova
ALOT
$227M
| $897K | ﹤0.01% |
103,749
+1,207
| +1% | +$10.5K |
|
|
UBFO
2340
DELISTED
United Security Bancshares
UBFO
| $897K | ﹤0.01% |
89,048
+10,800
| +14% | +$104K |
|
2341
Stepan Co
SCL
$1.48B
| $896K | ﹤0.01% |
18,927
-30,673
| -62% | -$1.4M |
|
2342
Relmada Therapeutics
RLMD
$507M
| $894K | ﹤0.01% |
185,000
+15,300
| +9% | +$51.3K |
|
2343
State Street SPDR Portfolio Aggregate Bond ETF
SPAB
$9.95B
| $894K | ﹤0.01% |
+34,700
| New | +$898K |
|
2344
MDxHealth
MDXH
$23.7M
| $893K | ﹤0.01% |
250,100
+47,300
| +23% | +$187K |
|
2345
Acumen Pharmaceuticals
ABOS
$184M
| $893K | ﹤0.01% |
423,100
-161,192
| -28% | -$320K |
|
2346
Amprius Technologies
AMPX
$1.74B
| $890K | ﹤0.01% |
112,825
+100,425
| +810% | +$1.15M |
|
|
STRR
2347
Star Equity Holdings
STRR
$37.5M
| $886K | ﹤0.01% |
78,726
-6,300
| -7% | -$67.5K |
|
2348
Invesco BulletShares 2027 Corporate Bond ETF
BSCR
$4.59B
| $882K | ﹤0.01% |
44,702
-528,198
| -92% | -$10.4M |
|
2349
Sanara MedTech
SMTI
$314M
| $878K | ﹤0.01% |
37,602
-4,098
| -10% | -$106K |
|
|
EWCZ
2350
DELISTED
European Wax Center
EWCZ
| $875K | ﹤0.01% |
243,100
-132,800
| -35% | -$496K |
|
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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.