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 | |
|---|---|---|---|---|---|---|
2226
Vanguard FTSE All-World ex-US Small-Cap Index Fund
VSS
$12B
| $1.08M | ﹤0.01% |
7,565
+5,265
| +229% | +$750K |
|
2227
Natural Alternatives International
NAII
$13.6M
| $1.08M | ﹤0.01% |
302,756
+10,900
| +4% | +$33.2K |
|
|
PINE
2228
Alpine Income Property Trust
PINE
$347M
| $1.08M | ﹤0.01% |
64,778
+2,278
| +4% | +$35.6K |
|
|
JKS
2229
JinkoSolar
JKS
$853M
| $1.08M | ﹤0.01% |
41,900
+24,900
| +146% | +$635K |
|
2230
Better Online Solutions
BOSC
$31.8M
| $1.08M | ﹤0.01% |
236,907
+28,540
| +14% | +$139K |
|
2231
Byrna Technologies
BYRN
$97.6M
| $1.08M | ﹤0.01% |
+64,100
| New | +$1.25M |
|
2232
Otter Tail
OTTR
$3.9B
| $1.07M | ﹤0.01% |
13,298
-94,612
| -88% | -$7.66M |
|
|
JBIO
2233
Jade Biosciences
JBIO
$1.51B
| $1.07M | ﹤0.01% |
+69,601
| New | +$816K |
|
2234
Champions Oncology
CSBR
$70.6M
| $1.07M | ﹤0.01% |
154,839
-12,422
| -7% | -$82.7K |
|
2235
iShares MSCI EAFE Min Vol Factor ETF
EFAV
$5.46B
| $1.07M | ﹤0.01% |
12,400
+1,200
| +11% | +$103K |
|
2236
Schwab Fundamental Emerging Markets Large Company Index ETF
FNDE
$9.95B
| $1.07M | ﹤0.01% |
+29,600
| New | +$1.08M |
|
|
WHWK
2237
Whitehawk Therapeutics
WHWK
$267M
| $1.07M | ﹤0.01% |
440,722
-16,700
| -4% | -$38.3K |
|
2238
Citizens & Northern Corp
CZNC
$466M
| $1.07M | ﹤0.01% |
52,855
+3,514
| +7% | +$70.1K |
|
|
NLOP
2239
Net Lease Office Properties
NLOP
$173M
| $1.06M | ﹤0.01% |
41,200
-66,300
| -62% | -$1.88M |
|
2240
State Street Materials Select Sector SPDR ETF
XLB
$8.57B
| $1.06M | ﹤0.01% |
23,400
-101,200
| -81% | -$4.47M |
|
|
ALMS
2241
Alumis Inc
ALMS
$3.11B
| $1.06M | ﹤0.01% |
108,200
-43,368
| -29% | -$303K |
|
|
IMSR
2242
Terrestrial Energy
IMSR
$642M
| $1.06M | ﹤0.01% |
+172,800
| New | +$2.31M |
|
2243
Tredegar Corp
TG
$278M
| $1.05M | ﹤0.01% |
146,692
-19,908
| -12% | -$151K |
|
|
AEBI
2244
Aebi Schmidt Holding AG
AEBI
$1.06B
| $1.05M | ﹤0.01% |
83,200
-13,400
| -14% | -$160K |
|
2245
Malibu Boats
MBUU
$573M
| $1.05M | ﹤0.01% |
37,300
-13,400
| -26% | -$389K |
|
2246
Kaltura
KLTR
$243M
| $1.05M | ﹤0.01% |
640,000
-216,400
| -25% | -$342K |
|
2247
Pembina Pipeline
PBA
$28.4B
| $1.05M | ﹤0.01% |
27,564
-208,600
| -88% | -$8.02M |
|
2248
iShares US Healthcare ETF
IYH
$3.77B
| $1.05M | ﹤0.01% |
16,100
+4,000
| +33% | +$252K |
|
2249
Capital Group Dividend Growers ETF
CGDG
$5.63B
| $1.05M | ﹤0.01% |
29,400
+15,800
| +116% | +$556K |
|
2250
Vanguard Extended Market ETF
VXF
$32.3B
| $1.05M | ﹤0.01% |
5,000
-5,400
| -52% | -$1.13M |
|
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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.