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 | |
|---|---|---|---|---|---|---|
751
Amphastar Pharmaceuticals
AMPH
$858M
| $14.6M | 0.02% |
544,700
-42,200
| -7% | -$1.09M |
|
752
iShares Russell 1000 ETF
IWB
$50.5B
| $14.5M | 0.02% |
38,920
+22,220
| +133% | +$8.23M |
|
753
Coursera
COUR
$1.53B
| $14.5M | 0.02% |
1,968,093
+29,593
| +2% | +$258K |
|
754
LendingTree
TREE
$461M
| $14.5M | 0.02% |
272,500
-117,500
| -30% | -$6.59M |
|
755
DoubleVerify
DV
$2.04B
| $14.4M | 0.02% |
1,259,400
-36,900
| -3% | -$407K |
|
756
AMN Healthcare
AMN
$1.34B
| $14.4M | 0.02% |
913,241
+158,341
| +21% | +$2.83M |
|
757
Daktronics
DAKT
$988M
| $14.4M | 0.02% |
727,461
+163,048
| +29% | +$3.12M |
|
758
John B. Sanfilippo & Son
JBSS
$1.01B
| $14.3M | 0.02% |
202,845
-33,900
| -14% | -$2.3M |
|
759
Fortune Brands Innovations
FBIN
$5.78B
| $14.3M | 0.02% |
285,000
-101,500
| -26% | -$5.09M |
|
760
Phillips Edison & Co
PECO
$5.2B
| $14.2M | 0.02% |
399,077
-28,825
| -7% | -$1M |
|
761
StealthGas
GASS
$343M
| $14.1M | 0.02% |
2,015,531
-13,745
| -0.7% | -$92.3K |
|
762
Manulife Financial
MFC
$72.9B
| $14.1M | 0.02% |
388,324
-9,300
| -2% | -$316K |
|
|
ORLA
763
DELISTED
Orla Mining
ORLA
| $14M | 0.02% |
1,042,199
+322,399
| +45% | +$3.91M |
|
764
XPO
XPO
$24.7B
| $14M | 0.02% |
103,120
+68,100
| +194% | +$9.28M |
|
765
Southside Bancshares
SBSI
$984M
| $14M | 0.02% |
460,446
-46,439
| -9% | -$1.36M |
|
766
Napco Security Technologies
NSSC
$1.37B
| $13.9M | 0.02% |
333,200
+18,100
| +6% | +$761K |
|
767
Artisan Partners
APAM
$3.03B
| $13.8M | 0.02% |
339,148
+14,225
| +4% | +$607K |
|
768
iShares National Muni Bond ETF
MUB
$45.9B
| $13.8M | 0.02% |
128,850
-156,250
| -55% | -$16.7M |
|
769
First Citizens BancShares
FCNCA
$25.6B
| $13.8M | 0.02% |
6,426
-460
| -7% | -$867K |
|
770
Jones Lang LaSalle
JLL
$17B
| $13.8M | 0.02% |
40,889
+4,200
| +11% | +$1.32M |
|
771
Maravai LifeSciences
MRVI
$861M
| $13.7M | 0.02% |
4,225,089
-93,000
| -2% | -$313K |
|
|
GOOD
772
Gladstone Commercial Corp
GOOD
$641M
| $13.7M | 0.02% |
1,285,466
-215,488
| -14% | -$2.39M |
|
773
Fortrea Holdings
FTRE
$1.69B
| $13.6M | 0.02% |
789,709
-505,291
| -39% | -$6.24M |
|
774
Zebra Technologies
ZBRA
$18B
| $13.6M | 0.02% |
55,951
+9,520
| +21% | +$2.55M |
|
775
EXL Service
EXLS
$5.36B
| $13.6M | 0.02% |
319,400
-181,700
| -36% | -$7.43M |
|
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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.