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 | |
|---|---|---|---|---|---|---|
2476
Pulmonx
LUNG
$92.8M
| $645K | ﹤0.01% |
292,000
-40,810
| -12% | -$76.7K |
|
2477
US GoldMining
USGO
$119M
| $645K | ﹤0.01% |
73,100
+43,700
| +149% | +$480K |
|
|
TBRG
2478
DELISTED
TruBridge
TBRG
| $644K | ﹤0.01% |
29,176
-120,475
| -81% | -$2.52M |
|
|
PXED
2479
Phoenix Education Partners
PXED
$988M
| $642K | ﹤0.01% |
+21,200
| New | +$710K |
|
2480
Research Solutions
RSSS
$76.6M
| $642K | ﹤0.01% |
218,200
+11,756
| +6% | +$36.7K |
|
2481
Global X MSCI Argentina ETF
ARGT
$809M
| $631K | ﹤0.01% |
+6,900
| New | +$589K |
|
2482
Shopify
SHOP
$204B
| $629K | ﹤0.01% |
+3,904
| New | +$627K |
|
2483
Orchestra BioMed
OBIO
$267M
| $628K | ﹤0.01% |
151,300
-229,208
| -60% | -$925K |
|
2484
State Street SPDR S&P Aerospace & Defense ETF
XAR
$6.62B
| $627K | ﹤0.01% |
2,600
+1,200
| +86% | +$285K |
|
|
BNR
2485
Burning Rock Biotech
BNR
$98M
| $627K | ﹤0.01% |
31,117
-600
| -2% | -$8.76K |
|
2486
Olema Pharmaceuticals
OLMA
$920M
| $627K | ﹤0.01% |
25,067
-65,033
| -72% | -$1.16M |
|
|
DAO
2487
Youdao
DAO
$2.11B
| $625K | ﹤0.01% |
62,000
-6,700
| -10% | -$66.9K |
|
2488
American Vanguard Corp
AVD
$62.8M
| $625K | ﹤0.01% |
163,500
+78,600
| +93% | +$367K |
|
|
XRN
2489
Chiron Real Estate Inc
XRN
$484M
| $624K | ﹤0.01% |
18,497
-39,500
| -68% | -$1.29M |
|
2490
Cineverse
CNVS
$68.2M
| $622K | ﹤0.01% |
294,947
-165,771
| -36% | -$449K |
|
2491
iShares Core US REIT ETF
USRT
$4.63B
| $615K | ﹤0.01% |
+10,799
| New | +$625K |
|
2492
Triple Flag Precious Metals
TFPM
$6.45B
| $615K | ﹤0.01% |
18,500
-105,000
| -85% | -$3.28M |
|
|
VIOT
2493
Viomi Technology
VIOT
$48.5M
| $614K | ﹤0.01% |
333,864
-43,892
| -12% | -$116K |
|
2494
Network-1 Technologies
NTIP
$35.2M
| $613K | ﹤0.01% |
467,844
-27,987
| -6% | -$40.6K |
|
|
BZUN
2495
Baozun
BZUN
$168M
| $612K | ﹤0.01% |
230,244
+35,228
| +18% | +$111K |
|
2496
Abeona Therapeutics
ABEO
$361M
| $612K | ﹤0.01% |
116,200
-410,237
| -78% | -$2.07M |
|
2497
SB Financial Group
SBFG
$171M
| $611K | ﹤0.01% |
27,425
-8,100
| -23% | -$168K |
|
2498
Greenfire Resources
GFR
$854M
| $611K | ﹤0.01% |
128,300
+17,600
| +16% | +$83.6K |
|
2499
Paysafe
PSFE
$405M
| $611K | ﹤0.01% |
75,489
-78,000
| -51% | -$756K |
|
2500
Beazer Homes USA
BZH
$874M
| $611K | ﹤0.01% |
30,128
-38,400
| -56% | -$854K |
|
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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.