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 | |
|---|---|---|---|---|---|---|
776
MediaAlpha
MAX
$813M
| $13.5M | 0.02% |
1,045,400
+100,300
| +11% | +$1.23M |
|
777
Helmerich & Payne
HP
$4.3B
| $13.5M | 0.02% |
471,100
-17,000
| -3% | -$452K |
|
778
PBF Energy
PBF
$8.81B
| $13.5M | 0.02% |
+496,032
| New | +$15.9M |
|
779
Central Garden & Pet Co Class A
CENTA
$2.41B
| $13.4M | 0.02% |
459,503
-52,672
| -10% | -$1.52M |
|
780
Hartford Financial Services
HIG
$37.8B
| $13.4M | 0.02% |
97,300
-170,100
| -64% | -$22.4M |
|
781
CTS Corp
CTS
$1.79B
| $13.4M | 0.02% |
312,642
-41,184
| -12% | -$1.73M |
|
782
Climb Global Solutions
CLMB
$532M
| $13.4M | 0.02% |
520,784
-38,000
| -7% | -$1.1M |
|
783
Host Hotels & Resorts
HST
$15.6B
| $13.4M | 0.02% |
754,013
-996,165
| -57% | -$17.2M |
|
784
FerroAtlántica
GSM
$818M
| $13.3M | 0.02% |
2,872,135
-215,003
| -7% | -$993K |
|
|
LGN
785
Legence Corp
LGN
$4.86B
| $13.3M | 0.02% |
+309,085
| New | +$12.2M |
|
786
Nathan's Famous
NATH
$397M
| $13.3M | 0.02% |
142,056
-11,300
| -7% | -$1.14M |
|
|
USAR
787
USA Rare Earth Inc
USAR
$4.55B
| $13.2M | 0.02% |
1,113,000
+161,600
| +17% | +$3.08M |
|
788
Suncor Energy
SU
$76.5B
| $13.2M | 0.02% |
298,377
-385,249
| -56% | -$16.3M |
|
789
Western New England Bancorp
WNEB
$282M
| $13.2M | 0.02% |
1,048,362
-13,100
| -1% | -$157K |
|
790
Healthcare Realty
HR
$6.58B
| $13.1M | 0.02% |
774,672
-154,700
| -17% | -$2.75M |
|
791
Perion Network
PERI
$384M
| $13.1M | 0.02% |
1,369,343
-25,272
| -2% | -$245K |
|
|
LINE
792
Lineage Inc
LINE
$9.8B
| $13.1M | 0.02% |
374,800
+70,000
| +23% | +$2.59M |
|
793
LXP Industrial Trust
LXP
$3.58B
| $13M | 0.02% |
262,576
-147,100
| -36% | -$7.05M |
|
794
iShares Core S&P Total US Stock Market ETF
ITOT
$98.5B
| $12.9M | 0.02% |
86,800
+78,000
| +886% | +$11.5M |
|
795
Weave Communications
WEAV
$426M
| $12.9M | 0.02% |
1,694,300
+407,500
| +32% | +$2.71M |
|
796
Cigna
CI
$73.5B
| $12.9M | 0.02% |
46,720
-167,039
| -78% | -$46.8M |
|
797
KBR
KBR
$4.81B
| $12.8M | 0.02% |
318,500
+8,400
| +3% | +$360K |
|
798
Equinor
EQNR
$96.3B
| $12.8M | 0.02% |
541,823
+12,513
| +2% | +$295K |
|
799
Ultrapar
UGP
$6.55B
| $12.8M | 0.02% |
3,382,778
+807,178
| +31% | +$3.19M |
|
800
AtriCure
ATRC
$2.21B
| $12.7M | 0.02% |
321,900
+63,100
| +24% | +$2.31M |
|
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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.