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 | |
|---|---|---|---|---|---|---|
651
NovoCure
NVCR
$2.02B
| $17.9M | 0.03% |
1,387,754
+314,900
| +29% | +$4.04M |
|
652
Park Aerospace
PKE
$811M
| $17.9M | 0.03% |
840,040
-53,652
| -6% | -$1.07M |
|
653
Vishay Precision Group
VPG
$908M
| $17.8M | 0.03% |
461,573
-30,100
| -6% | -$1.06M |
|
654
Telefônica Brasil
VIV
$18.1B
| $17.7M | 0.03% |
1,493,100
-189,400
| -11% | -$2.35M |
|
655
Ionis Pharmaceuticals
IONS
$9.28B
| $17.7M | 0.03% |
223,607
-263,107
| -54% | -$19.8M |
|
656
Garrett Motion
GTX
$5.35B
| $17.6M | 0.03% |
1,012,400
-771,000
| -43% | -$12.3M |
|
657
Booz Allen Hamilton
BAH
$9.43B
| $17.6M | 0.03% |
209,094
+100
| +0% | +$8.95K |
|
|
JBTM
658
JBT Marel
JBTM
$6.1B
| $17.6M | 0.03% |
116,700
-60,200
| -34% | -$8.49M |
|
659
Occidental Petroleum
OXY
$57.7B
| $17.6M | 0.03% |
426,900
-1,655,238
| -79% | -$69.1M |
|
660
Delek US
DK
$4.18B
| $17.6M | 0.03% |
591,769
+413,700
| +232% | +$14.8M |
|
661
Titan International
TWI
$438M
| $17.6M | 0.03% |
2,241,487
-361,500
| -14% | -$2.83M |
|
662
Grupo Aeroportuario Centro Norte
OMAB
$5.19B
| $17.5M | 0.03% |
161,200
-17,700
| -10% | -$1.85M |
|
663
AptarGroup
ATR
$8.43B
| $17.5M | 0.03% |
143,600
+28,500
| +25% | +$3.52M |
|
|
WCN
664
Waste Connections
WCN
$41.6B
| $17.5M | 0.03% |
99,661
+61,800
| +163% | +$10.7M |
|
665
BJs Wholesale Club
BJ
$11.9B
| $17.4M | 0.03% |
193,600
-367,154
| -65% | -$33.7M |
|
666
Central Pacific Financial
CPF
$1B
| $17.4M | 0.03% |
558,200
-53,200
| -9% | -$1.6M |
|
667
National Presto Industries
NPK
$987M
| $17.4M | 0.03% |
162,800
-20,200
| -11% | -$2.12M |
|
|
DHIL
668
DELISTED
Diamond Hill
DHIL
| $17.3M | 0.03% |
102,246
-10,100
| -9% | -$1.4M |
|
|
FOLD
669
DELISTED
Amicus Therapeutics
FOLD
| $17.3M | 0.03% |
1,211,693
-731,478
| -38% | -$7.19M |
|
670
Graham Corp
GHM
$1.3B
| $17.2M | 0.03% |
268,368
-40,300
| -13% | -$2.43M |
|
671
Village Super Market
VLGEA
$638M
| $17.2M | 0.03% |
485,984
-27,400
| -5% | -$941K |
|
|
SARO
672
StandardAero Inc
SARO
$8.97B
| $17.2M | 0.03% |
598,700
-569,300
| -49% | -$15.5M |
|
673
PagerDuty
PD
$932M
| $17.1M | 0.03% |
1,307,738
-258,500
| -17% | -$3.77M |
|
674
Stellantis
STLA
$20.2B
| $17.1M | 0.03% |
1,541,004
+1,254,823
| +438% | +$13.5M |
|
675
Baytex Energy
BTE
$3B
| $17.1M | 0.03% |
5,294,900
-3,907,800
| -42% | -$10.9M |
|
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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.