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 | |
|---|---|---|---|---|---|---|
451
Canadian National Railway
CNI
$77.2B
| $29.9M | 0.05% |
302,600
+52,200
| +21% | +$5.02M |
|
452
US Foods
USFD
$23.8B
| $29.8M | 0.05% |
396,200
-93,000
| -19% | -$6.98M |
|
453
ON Semiconductor
ON
$31.8B
| $29.8M | 0.05% |
550,896
-1,058,836
| -66% | -$54.3M |
|
454
Vanda Pharmaceuticals
VNDA
$304M
| $29.8M | 0.05% |
3,380,961
-95,964
| -3% | -$528K |
|
455
Teekay Tankers
TNK
$2.9B
| $29.8M | 0.05% |
557,100
-273,024
| -33% | -$15.3M |
|
456
CVR Energy
CVI
$3.58B
| $29.7M | 0.05% |
1,167,184
+280,300
| +32% | +$9.54M |
|
457
Ferrari
RACE
$72.5B
| $29.6M | 0.05% |
79,108
+61,382
| +346% | +$24.6M |
|
458
Wabtec
WAB
$50.3B
| $29.5M | 0.05% |
138,395
-238,200
| -63% | -$48.9M |
|
459
America Movil
AMX
$69.8B
| $29.5M | 0.05% |
1,428,528
-371,700
| -21% | -$8.18M |
|
460
Tower Semiconductor
TSEM
$28.6B
| $29.4M | 0.05% |
250,549
-52,500
| -17% | -$5.06M |
|
461
Pediatrix Medical
MD
$2.14B
| $29M | 0.05% |
1,357,700
+51,700
| +4% | +$1.06M |
|
462
Robert Half
RHI
$4.48B
| $29M | 0.05% |
1,068,272
+231,672
| +28% | +$6.61M |
|
463
Marathon Petroleum
MPC
$100B
| $28.9M | 0.04% |
+177,899
| New | +$33.3M |
|
464
Gaming and Leisure Properties
GLPI
$12.7B
| $28.9M | 0.04% |
646,330
-131,900
| -17% | -$5.85M |
|
465
West Pharmaceutical
WST
$24.4B
| $28.8M | 0.04% |
+104,736
| New | +$28.6M |
|
466
Enphase Energy
ENPH
$5.39B
| $28.8M | 0.04% |
897,094
-1,770,334
| -66% | -$57.3M |
|
467
Scotiabank
BNS
$111B
| $28.6M | 0.04% |
388,700
-510,900
| -57% | -$34.7M |
|
468
Capitol Federal Financial
CFFN
$1.09B
| $28.6M | 0.04% |
4,196,897
-278,000
| -6% | -$1.81M |
|
|
QXO
469
QXO Inc
QXO
$16.1B
| $28.5M | 0.04% |
1,478,200
-2,514,000
| -63% | -$48.2M |
|
470
American Tower
AMT
$81.2B
| $28.4M | 0.04% |
162,039
+87,100
| +116% | +$15.8M |
|
471
Edison International
EIX
$27.2B
| $28.4M | 0.04% |
+473,900
| New | +$27.2M |
|
472
DHT Holdings
DHT
$3.09B
| $28.4M | 0.04% |
2,327,845
-495,651
| -18% | -$6.24M |
|
473
Pagaya Technologies
PGY
$1.79B
| $28.3M | 0.04% |
1,354,064
+290,379
| +27% | +$7.4M |
|
474
Belden
BDC
$5.36B
| $28.2M | 0.04% |
242,255
-47,100
| -16% | -$5.49M |
|
475
ADMA Biologics
ADMA
$2.11B
| $28M | 0.04% |
1,532,621
-1,237,821
| -45% | -$20.9M |
|
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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.