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 | |
|---|---|---|---|---|---|---|
276
Northrop Grumman
NOC
$81.8B
| $53.4M | 0.08% |
+93,700
| New | +$54.4M |
|
277
Zoetis
ZTS
$31.1B
| $53.4M | 0.08% |
424,600
+167,700
| +65% | +$21.9M |
|
278
Dell
DELL
$285B
| $53.4M | 0.08% |
424,077
+218,900
| +107% | +$30.8M |
|
279
Allstate
ALL
$66.3B
| $52.9M | 0.08% |
254,000
-27,100
| -10% | -$5.55M |
|
280
Alignment Healthcare
ALHC
$2.74B
| $52.7M | 0.08% |
2,667,200
-305,300
| -10% | -$5.48M |
|
281
Fortive
FTV
$18.6B
| $52.5M | 0.08% |
951,300
-882,700
| -48% | -$45.8M |
|
282
Toro Company
TTC
$9.41B
| $52.5M | 0.08% |
667,100
+11,200
| +2% | +$828K |
|
283
Lennar Class A
LEN
$21.1B
| $51.9M | 0.08% |
+504,639
| New | +$60.9M |
|
284
Arm
ARM
$287B
| $51.8M | 0.08% |
473,600
-21,800
| -4% | -$3.17M |
|
285
Grand Canyon Education
LOPE
$3.76B
| $51.7M | 0.08% |
310,702
-63,700
| -17% | -$11.5M |
|
286
Coca-Cola Consolidated
COKE
$12.1B
| $51.7M | 0.08% |
336,970
-49,800
| -13% | -$7.31M |
|
287
REX American Resources
REX
$1.43B
| $51.6M | 0.08% |
1,595,630
-145,800
| -8% | -$4.75M |
|
|
DVAX
288
DELISTED
Dynavax Technologies
DVAX
| $51.3M | 0.08% |
3,337,533
+198,986
| +6% | +$2.19M |
|
|
MOMO
289
Hello Group
MOMO
$861M
| $51.2M | 0.08% |
7,823,010
-350,080
| -4% | -$2.41M |
|
290
Compass
COMP
$9.74B
| $51.2M | 0.08% |
4,843,800
+1,015,600
| +27% | +$9.27M |
|
291
GSK
GSK
$102B
| $50.8M | 0.08% |
1,035,572
-952,381
| -48% | -$44.4M |
|
292
Petrobras Class A
PBR.A
$103B
| $50.6M | 0.08% |
4,485,600
-593,400
| -12% | -$6.85M |
|
293
Comfort Systems
FIX
$59.4B
| $50.4M | 0.08% |
53,980
+3,580
| +7% | +$3.31M |
|
294
McKesson
MCK
$105B
| $50.3M | 0.08% |
61,286
-61,140
| -50% | -$49.9M |
|
295
Crown Castle
CCI
$31.3B
| $50.2M | 0.08% |
565,278
+239,175
| +73% | +$22M |
|
296
LegalZoom.com
LZ
$932M
| $50.2M | 0.08% |
5,051,623
-258,332
| -5% | -$2.56M |
|
297
FirstEnergy
FE
$27.1B
| $50.1M | 0.08% |
1,118,708
-102,100
| -8% | -$4.69M |
|
298
PLDT
PHI
$4.23B
| $50M | 0.08% |
2,298,043
-61,426
| -3% | -$1.26M |
|
299
IDT Corp
IDT
$1.63B
| $49.9M | 0.08% |
974,806
-77,700
| -7% | -$3.89M |
|
300
Toronto Dominion Bank
TD
$201B
| $49.7M | 0.08% |
528,080
-432,300
| -45% | -$36.5M |
|
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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.