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 | |
|---|---|---|---|---|---|---|
526
Workiva
WK
$4.01B
| $24.1M | 0.04% |
279,040
-131,471
| -32% | -$11.6M |
|
527
Ameren
AEE
$30.2B
| $24M | 0.04% |
+240,800
| New | +$24.7M |
|
|
AGNT
528
AGNT Inc
AGNT
$752M
| $24M | 0.04% |
2,656,716
+116,900
| +5% | +$1.23M |
|
|
LTM
529
LATAM Airlines Group S.A.
LTM
$15.1B
| $24M | 0.04% |
444,800
-42,200
| -9% | -$2M |
|
530
Mercantile Bank Corp
MBWM
$1.06B
| $23.9M | 0.04% |
496,213
+5,800
| +1% | +$268K |
|
|
TE
531
T1 Energy
TE
$1.41B
| $23.8M | 0.04% |
+3,569,256
| New | +$15.7M |
|
532
Gold Fields
GFI
$35.4B
| $23.8M | 0.04% |
545,687
-648,355
| -54% | -$27.1M |
|
533
Sturm, Ruger & Co
RGR
$601M
| $23.8M | 0.04% |
729,276
-36,000
| -5% | -$1.33M |
|
534
ADT
ADT
$5.46B
| $23.7M | 0.04% |
2,937,206
-1,218,000
| -29% | -$10.1M |
|
535
Hess Midstream
HESM
$5.11B
| $23.6M | 0.04% |
683,800
-251,502
| -27% | -$8.46M |
|
536
iShares Core S&P 500 ETF
IVV
$910B
| $23.6M | 0.04% |
+34,420
| New | +$23.4M |
|
537
American Water Works
AWK
$27.1B
| $23.5M | 0.04% |
180,200
+1,800
| +1% | +$240K |
|
538
Watts Water Technologies
WTS
$12.8B
| $23.5M | 0.04% |
85,180
-9,820
| -10% | -$2.71M |
|
539
Liberty Global Class C
LBTYK
$3.48B
| $23.5M | 0.04% |
2,129,200
-125,900
| -6% | -$1.4M |
|
540
Harmony Gold Mining
HMY
$12B
| $23.4M | 0.04% |
1,176,120
+1,041,800
| +776% | +$19.4M |
|
541
Devon Energy
DVN
$48.8B
| $23.4M | 0.04% |
637,549
-1,710,081
| -73% | -$59.7M |
|
|
BCPC
542
Balchem Corp
BCPC
$5.65B
| $23.3M | 0.04% |
152,100
-89,500
| -37% | -$13.7M |
|
543
Rigel Pharmaceuticals
RIGL
$762M
| $23.1M | 0.04% |
539,009
+64,800
| +14% | +$2.44M |
|
544
Vanguard Morningstar Total Stock Market ETF
VTI
$696B
| $23M | 0.04% |
68,660
+59,660
| +663% | +$19.8M |
|
545
Gerdau
GGB
$9.42B
| $22.9M | 0.04% |
6,211,324
-4,645,824
| -43% | -$16.2M |
|
546
Guidewire Software
GWRE
$15.2B
| $22.9M | 0.04% |
113,900
-29,200
| -20% | -$6.46M |
|
547
Barrett Business Services
BBSI
$800M
| $22.8M | 0.04% |
630,862
-16,438
| -3% | -$629K |
|
548
FuboTV Inc
FUBO
$296M
| $22.8M | 0.04% |
752,522
-184,870
| -20% | -$7.38M |
|
549
Seaboard Corp
SEB
$4.08B
| $22.7M | 0.04% |
5,102
-343
| -6% | -$1.36M |
|
550
Towne Bank
TOWN
$3.5B
| $22.7M | 0.04% |
679,139
-18,355
| -3% | -$618K |
|
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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.