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 | |
|---|---|---|---|---|---|---|
401
Patterson-UTI
PTEN
$4.2B
| $35M | 0.05% |
5,729,699
-3,007,300
| -34% | -$18M |
|
402
Match Group
MTCH
$8.37B
| $34.8M | 0.05% |
1,076,954
-187,299
| -15% | -$6.15M |
|
403
Mirum Pharmaceuticals
MIRM
$6.08B
| $34.7M | 0.05% |
439,085
-74,363
| -14% | -$5.34M |
|
404
Vanguard S&P 500 ETF
VOO
$1.03T
| $34.7M | 0.05% |
+55,260
| New | +$34.3M |
|
405
Dow Inc
DOW
$22.1B
| $34.6M | 0.05% |
+1,478,500
| New | +$34M |
|
406
Warby Parker
WRBY
$3.12B
| $34.5M | 0.05% |
1,584,825
+160,825
| +11% | +$3.5M |
|
407
EPR Properties
EPR
$4.64B
| $34.5M | 0.05% |
691,300
-284,523
| -29% | -$14.8M |
|
408
Baker Hughes
BKR
$64.3B
| $34.5M | 0.05% |
757,440
+192,900
| +34% | +$9.15M |
|
409
Walmart Inc
WMT
$915B
| $34.5M | 0.05% |
309,260
-930,891
| -75% | -$100M |
|
410
Camden Property Trust
CPT
$10.9B
| $34.3M | 0.05% |
311,900
+25,100
| +9% | +$2.61M |
|
411
Fortis
FTS
$28.7B
| $34.2M | 0.05% |
658,952
-357,800
| -35% | -$18.3M |
|
412
AppFolio
APPF
$7.02B
| $34.1M | 0.05% |
146,520
-17,982
| -11% | -$4.27M |
|
413
Griffon
GFF
$4.73B
| $33.9M | 0.05% |
460,251
+7,300
| +2% | +$543K |
|
414
Sunrun
RUN
$2.35B
| $33.7M | 0.05% |
1,833,045
-44,000
| -2% | -$844K |
|
|
IMOS
415
ChipMOS TECHNOLOGIES
IMOS
$1.98B
| $33.3M | 0.05% |
1,125,190
-16,400
| -1% | -$409K |
|
416
Flowers Foods
FLO
$1.5B
| $33.3M | 0.05% |
3,061,782
-2,389,382
| -44% | -$27.7M |
|
|
ELME
417
Elme Communities
ELME
$145M
| $33.3M | 0.05% |
1,914,137
+399,566
| +26% | +$6.77M |
|
418
SEI Investments
SEIC
$12.6B
| $32.6M | 0.05% |
397,226
+10,300
| +3% | +$847K |
|
419
Old Dominion Freight Line
ODFL
$44.2B
| $32.4M | 0.05% |
206,882
-142,700
| -41% | -$20.5M |
|
420
Ralph Lauren
RL
$23.4B
| $32.2M | 0.05% |
91,150
-151,650
| -62% | -$51.7M |
|
421
Welltower
WELL
$165B
| $32.1M | 0.05% |
173,063
-188,600
| -52% | -$35.2M |
|
422
Arlo Technologies
ARLO
$1.51B
| $32M | 0.05% |
2,289,759
+454,000
| +25% | +$7.15M |
|
|
423
Alphabet (Google) Class C
GOOG
$4.18T
| $32M | 0.05% |
102,081
-1,617,921
| -94% | -$463M |
|
424
MarketAxess Holdings
MKTX
$5.72B
| $31.9M | 0.05% |
176,000
-69,000
| -28% | -$11.8M |
|
425
Ametek
AME
$59.2B
| $31.8M | 0.05% |
154,650
-101,300
| -40% | -$19.7M |
|
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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.