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 | |
|---|---|---|---|---|---|---|
701
Canadian Imperial Bank of Commerce
CM
$112B
| $16.3M | 0.03% |
179,728
-106,300
| -37% | -$9.12M |
|
702
Lincoln Electric
LECO
$15.5B
| $16.2M | 0.03% |
67,738
+20,300
| +43% | +$4.81M |
|
|
KEEL
703
Keel Infrastructure Corp
KEEL
$2.04B
| $16.2M | 0.03% |
+6,884,431
| New | +$23.6M |
|
704
MYR Group
MYRG
$5.1B
| $16.2M | 0.03% |
74,000
+11,400
| +18% | +$2.48M |
|
705
UDR
UDR
$12.2B
| $16.2M | 0.03% |
440,398
-459,638
| -51% | -$16.3M |
|
706
Boston Beer
SAM
$1.9B
| $16.1M | 0.03% |
82,679
-4,400
| -5% | -$907K |
|
707
Cosan
CSAN
$2.57B
| $16M | 0.02% |
4,062,982
-171,200
| -4% | -$780K |
|
708
UMB Financial
UMBF
$11.5B
| $16M | 0.02% |
139,270
+31,200
| +29% | +$3.53M |
|
709
Magna International
MGA
$18.7B
| $16M | 0.02% |
300,284
-470,200
| -61% | -$23M |
|
710
Mueller Industries
MLI
$14.7B
| $16M | 0.02% |
278,400
-621,600
| -69% | -$33.4M |
|
711
Life Time Group Holdings
LTH
$9.9B
| $15.9M | 0.02% |
599,900
-41,500
| -6% | -$1.08M |
|
712
Everest Group
EG
$14B
| $15.9M | 0.02% |
46,980
-88,820
| -65% | -$29.3M |
|
713
State Street SPDR Bloomberg High Yield Bond ETF
JNK
$7.33B
| $15.9M | 0.02% |
163,600
+110,000
| +205% | +$10.7M |
|
|
APLS
714
DELISTED
Apellis Pharmaceuticals
APLS
| $15.9M | 0.02% |
633,058
-89,837
| -12% | -$2.11M |
|
|
SPYM
715
State Street SPDR Portfolio S&P 500 ETF
SPYM
$170B
| $15.9M | 0.02% |
+198,100
| New | +$15.8M |
|
716
Autoliv
ALV
$8.89B
| $15.9M | 0.02% |
133,700
-27,300
| -17% | -$3.26M |
|
717
LiveRamp
RAMP
$2.31B
| $15.8M | 0.02% |
537,699
-130,401
| -20% | -$3.74M |
|
718
National Vision
EYE
$1.51B
| $15.8M | 0.02% |
610,400
+200,800
| +49% | +$5.4M |
|
719
Aptiv
APTV
$10.2B
| $15.6M | 0.02% |
+205,400
| New | +$16.5M |
|
720
Ardmore Shipping
ASC
$707M
| $15.6M | 0.02% |
1,470,357
-33,300
| -2% | -$396K |
|
721
American Homes 4 Rent
AMH
$12.3B
| $15.5M | 0.02% |
484,229
-423,800
| -47% | -$13.6M |
|
722
Option Care Health
OPCH
$3.61B
| $15.4M | 0.02% |
483,826
-680,720
| -58% | -$20M |
|
723
ITT
ITT
$19.4B
| $15.3M | 0.02% |
+88,400
| New | +$15.8M |
|
724
Adient
ADNT
$1.54B
| $15.3M | 0.02% |
799,200
+71,400
| +10% | +$1.5M |
|
725
TransAlta
TAC
$3.99B
| $15.3M | 0.02% |
1,210,995
+180,995
| +18% | +$2.7M |
|
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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.