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 |
Apple
AAPL
|
+$800M |
| 2 |
NVIDIA
NVDA
|
+$304M |
| 3 |
Broadcom
AVGO
|
+$261M |
| 4 |
Linde
LIN
|
+$237M |
| 5 |
JPMorgan Chase
JPM
|
+$208M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Costco
COST
|
+$656M |
| 2 |
Netflix
NFLX
|
+$632M |
| 3 |
Tesla
TSLA
|
+$474M |
| 4 |
Procter & Gamble
PG
|
+$428M |
| 5 |
Micron Technology
MU
|
+$332M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 22.04% |
| 2 | Healthcare | 15.35% |
| 3 | Industrials | 11.13% |
| 4 | Consumer Discretionary | 10.88% |
| 5 | Financials | 10.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2676
Cartesian Therapeutics
RNAC
$260M
| $414K | ﹤0.01% |
67,300
+26,200
| +64% | +$187K |
|
2677
Fossil Group
FOSL
$310M
| $413K | ﹤0.01% |
+95,936
| New | +$387K |
|
2678
Pulmonx
LUNG
$97.1M
| $413K | ﹤0.01% |
320,300
+28,300
| +10% | +$46.8K |
|
2679
Galectin Therapeutics
GALT
$316M
| $413K | ﹤0.01% |
+147,900
| New | +$450K |
|
|
INV
2680
Innventure Inc
INV
$282M
| $411K | ﹤0.01% |
105,000
+73,000
| +228% | +$258K |
|
2681
Coya Therapeutics
COYA
$113M
| $410K | ﹤0.01% |
103,964
+37,064
| +55% | +$173K |
|
2682
Central Plains Bancshares
CPBI
$86.1M
| $409K | ﹤0.01% |
23,900
| – | – |
|
|
IMA
2683
ImageneBio Inc
IMA
$63.7M
| $408K | ﹤0.01% |
81,696
+15,600
| +24% | +$101K |
|
2684
Montauk Renewables
MNTK
$258M
| $408K | ﹤0.01% |
354,600
+11,900
| +3% | +$17.9K |
|
2685
State Street SPDR S&P Aerospace & Defense ETF
XAR
$6.62B
| $406K | ﹤0.01% |
1,600
-1,000
| -38% | -$274K |
|
2686
Vericel Corp
VCEL
$2.27B
| $405K | ﹤0.01% |
+12,600
| New | +$448K |
|
2687
GSI Technology
GSIT
$253M
| $405K | ﹤0.01% |
78,701
-37,600
| -32% | -$273K |
|
2688
Broadwind
BWEN
$125M
| $403K | ﹤0.01% |
193,858
-10,074
| -5% | -$27.3K |
|
2689
Caesarstone
CSTE
$104M
| $403K | ﹤0.01% |
376,302
-2,000
| -0.5% | -$3.29K |
|
2690
IRIDEX
IRIX
$15.5M
| $401K | ﹤0.01% |
396,627
+25,067
| +7% | +$34.2K |
|
2691
Lifezone Metals
LZM
$372M
| $400K | ﹤0.01% |
119,153
+96,844
| +434% | +$450K |
|
2692
Gossamer Bio
GOSS
$88.9M
| $400K | ﹤0.01% |
1,217,868
+558,980
| +85% | +$879K |
|
|
TSMX
2693
Direxion Daily TSM Bull 2X ETF
TSMX
$660M
| $400K | ﹤0.01% |
+7,000
| New | +$431K |
|
2694
Research Solutions
RSSS
$70.9M
| $400K | ﹤0.01% |
176,900
-41,300
| -19% | -$106K |
|
|
HYPD
2695
Hyperion DeFi Inc
HYPD
$40M
| $399K | ﹤0.01% |
115,641
-70,459
| -38% | -$244K |
|
2696
KLX Energy Services
KLXE
$32.5M
| $395K | ﹤0.01% |
152,100
+14,100
| +10% | +$35.6K |
|
2697
Magyar Bancorp
MGYR
$123M
| $394K | ﹤0.01% |
22,786
+200
| +0.9% | +$3.53K |
|
2698
Armata Pharmaceuticals
ARMP
$156M
| $394K | ﹤0.01% |
38,496
-30,000
| -44% | -$252K |
|
2699
Auburn National Bancorp
AUBN
$91.2M
| $394K | ﹤0.01% |
16,509
| – | – |
|
|
WSBK
2700
Winchester Bancorp
WSBK
$117M
| $394K | ﹤0.01% |
31,000
+4,498
| +17% | +$54.7K |
|
Similar funds
Jim Simons's Q1 2026 Portfolio in Review
As of Q1 2026, Jim Simons held 3,809 positions worth $63.9B, down 0.82% from $64.5B the previous quarter. Its ten largest holdings account for 11% of the portfolio.
Jim Simons's Q1 2026 filing shows 624 new, 1,320 increased, 1,262 reduced and 596 closed positions. Its largest new stake was Apple: 3,075,638 shares worth $781M. The largest sale was Costco, an estimated $656M.
By sector, the portfolio is most concentrated in Technology at 22% of assets, up from 21% a quarter earlier, followed by Healthcare and Industrials.
- Jim Simons's largest Q1 2026 buy was Apple: 3,075,638 shares worth $781M.
- Jim Simons added most to NVIDIA in Q1 2026, an estimated $304M increase.
- Jim Simons's biggest Q1 2026 reduction was Costco, cutting an estimated $656M.
- Jim Simons fully exited Procter & Gamble in Q1 2026, selling an estimated $428M.
- Jim Simons's ten largest holdings make up 11% of its $63.9B portfolio in Q1 2026.
- Jim Simons opened 624 new positions and closed 596 in Q1 2026.
- Jim Simons's portfolio value fell 0.82% quarter-over-quarter to $63.9B.
Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.