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 | |
|---|---|---|---|---|---|---|
|
RENT
3026
Rent the Runway
RENT
$119M
| $88.6K | ﹤0.01% |
+11,200
| New | +$60.4K |
|
3027
SemiLEDS
LEDS
$19.9M
| $88K | ﹤0.01% |
58,700
+1,287
| +2% | +$2.9K |
|
|
XMAX
3028
XMAX Inc
XMAX
$567M
| $86.4K | ﹤0.01% |
14,400
-70,900
| -83% | -$400K |
|
3029
Fathom Holdings
FTHM
$23.1M
| $86.4K | ﹤0.01% |
85,500
-9,300
| -10% | -$12.5K |
|
3030
Castor Maritime
CTRM
$20.2M
| $84K | ﹤0.01% |
40,569
-2,100
| -5% | -$4.38K |
|
3031
Flux Power
FLUX
$12.5M
| $82.8K | ﹤0.01% |
+65,205
| New | +$192K |
|
3032
Claros Mortgage Trust
CMTG
$262M
| $82.3K | ﹤0.01% |
26,900
+4,200
| +19% | +$13.7K |
|
3033
CEL-SCI Corp
CVM
$25.9M
| $81K | ﹤0.01% |
+15,406
| New | +$113K |
|
|
MREO
3034
Mereo BioPharma
MREO
$48.3M
| $81K | ﹤0.01% |
194,371
-396,500
| -67% | -$755K |
|
|
SSKN
3035
DELISTED
Strata Skin Sciences
SSKN
| $80.4K | ﹤0.01% |
63,830
-37,700
| -37% | -$59.3K |
|
3036
SurgePays
SURG
$6.86M
| $80.2K | ﹤0.01% |
48,000
-1,300
| -3% | -$2.9K |
|
|
SLAI
3037
DELISTED
SOLAI Ltd ADS
SLAI
| $79.2K | ﹤0.01% |
+16,872
| New | +$217K |
|
3038
Gogoro
GGR
$49.4M
| $78.2K | ﹤0.01% |
28,538
+1,571
| +6% | +$6.33K |
|
3039
Moving iMage Technologies
MITQ
$5.44M
| $77.5K | ﹤0.01% |
117,300
+21,100
| +22% | +$16.8K |
|
3040
Siebert Financial
SIEB
$70.8M
| $76.9K | ﹤0.01% |
21,900
-5,000
| -19% | -$15.9K |
|
3041
AgEagle Aerial Systems
UAVS
$55.5M
| $76.6K | ﹤0.01% |
+94,115
| New | +$146K |
|
3042
Wetouch Technology
WETH
$14.2M
| $75.3K | ﹤0.01% |
56,200
+6,100
| +12% | +$11.8K |
|
3043
Quanterix
QTRX
$139M
| $75K | ﹤0.01% |
+11,800
| New | +$73.3K |
|
3044
Roma Green Finance Ltd
ROMA
$519M
| $74.9K | ﹤0.01% |
44,308
-13,292
| -23% | -$34.3K |
|
3045
ReWalk Robotics
LFWD
$21.8M
| $74.8K | ﹤0.01% |
10,809
-167
| -2% | -$1.3K |
|
3046
PEDEVCO
PED
$150M
| $74.7K | ﹤0.01% |
6,670
-1,840
| -22% | -$20.7K |
|
3047
Grove Collaborative
GROV
$44.4M
| $74.3K | ﹤0.01% |
67,500
+800
| +1% | +$1.09K |
|
3048
Dolphin Entertainment
DLPN
$14.8M
| $73.9K | ﹤0.01% |
47,400
+9,500
| +25% | +$14.9K |
|
3049
System1
SST
$19.8M
| $73K | ﹤0.01% |
18,620
+1,500
| +9% | +$7.75K |
|
3050
Cue Biopharma
CUE
$128M
| $72.8K | ﹤0.01% |
7,945
+376
| +5% | +$6.91K |
|
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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.