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 | |
|---|---|---|---|---|---|---|
676
Tetra Tech
TTEK
$9.33B
| $17.1M | 0.03% |
508,700
+1,000
| +0.2% | +$33.8K |
|
677
Grupo Aeroportuario del Sureste
ASR
$8.01B
| $17M | 0.03% |
52,702
-20,381
| -28% | -$6.3M |
|
678
Trip.com Group
TCOM
$28.3B
| $17M | 0.03% |
236,712
-6,200
| -3% | -$443K |
|
679
Sensata Technologies
ST
$6.61B
| $17M | 0.03% |
511,200
-234,100
| -31% | -$7.49M |
|
680
Payoneer
PAYO
$2.42B
| $16.9M | 0.03% |
3,008,607
-557,493
| -16% | -$3.22M |
|
681
Littelfuse
LFUS
$11.4B
| $16.9M | 0.03% |
66,814
+60,551
| +967% | +$15.4M |
|
682
Birkenstock
BIRK
$7.54B
| $16.8M | 0.03% |
411,300
+130,200
| +46% | +$5.51M |
|
683
Safe Bulkers
SB
$781M
| $16.8M | 0.03% |
3,489,766
-26,486
| -0.8% | -$126K |
|
684
Costamare
CMRE
$1.74B
| $16.8M | 0.03% |
1,065,132
-104,200
| -9% | -$1.44M |
|
685
Moderna
MRNA
$25.4B
| $16.8M | 0.03% |
+568,400
| New | +$15.4M |
|
686
Fastenal
FAST
$58.9B
| $16.8M | 0.03% |
+417,476
| New | +$17.6M |
|
687
Nu Skin
NUS
$236M
| $16.7M | 0.03% |
1,739,896
-69,300
| -4% | -$717K |
|
688
Brink's
BCO
$4.72B
| $16.7M | 0.03% |
143,332
-33,300
| -19% | -$3.81M |
|
689
MiMedx Group
MDXG
$612M
| $16.7M | 0.03% |
2,467,065
+458,838
| +23% | +$3.22M |
|
690
Marathon Digital Holdings
MARA
$3.56B
| $16.7M | 0.03% |
1,858,838
-1,021,500
| -35% | -$15.1M |
|
691
Tootsie Roll Industries
TR
$3.02B
| $16.7M | 0.03% |
468,844
-62,624
| -12% | -$2.37M |
|
692
ODDITY Tech
ODD
$615M
| $16.7M | 0.03% |
414,900
-367,100
| -47% | -$16.6M |
|
693
dLocal
DLO
$4.34B
| $16.6M | 0.03% |
1,174,900
-84,000
| -7% | -$1.18M |
|
694
BioCryst Pharmaceuticals
BCRX
$2.51B
| $16.6M | 0.03% |
2,128,821
-11,713
| -0.5% | -$84.7K |
|
695
State Street Industrial Select Sector SPDR ETF
XLI
$34.7B
| $16.5M | 0.03% |
+106,300
| New | +$16.4M |
|
696
Cullen/Frost Bankers
CFR
$10.5B
| $16.5M | 0.03% |
130,200
-8,200
| -6% | -$1.03M |
|
697
Spok Holdings
SPOK
$230M
| $16.4M | 0.03% |
1,246,579
+74,029
| +6% | +$1.05M |
|
698
Eastman Chemical
EMN
$8.43B
| $16.4M | 0.03% |
257,440
-19,000
| -7% | -$1.17M |
|
699
Haverty Furniture Companies
HVT
$450M
| $16.4M | 0.03% |
700,206
-24,000
| -3% | -$540K |
|
700
Hovnanian Enterprises
HOV
$799M
| $16.3M | 0.03% |
167,615
-13,800
| -8% | -$1.63M |
|
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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.