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 |
NVIDIA
NVDA
|
+$798M |
| 2 |
Netflix
NFLX
|
+$608M |
| 3 |
UnitedHealth
UNH
|
+$517M |
| 4 |
Apple
AAPL
|
+$461M |
| 5 |
GE Vernova
GEV
|
+$296M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$527M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$372M |
| 3 |
Meta Platforms (Facebook)
META
|
+$362M |
| 4 |
Advanced Micro Devices
AMD
|
+$328M |
| 5 |
Palantir
PLTR
|
+$327M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 19.57% |
| 2 | Healthcare | 15.8% |
| 3 | Consumer Discretionary | 12.38% |
| 4 | Financials | 11.53% |
| 5 | Industrials | 8.92% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
426
Invitation Homes
INVH
$17.7B
| $40M | 0.05% |
1,219,083
+410,200
| +51% | +$13.8M |
|
427
Blackstone
BX
$109B
| $39.9M | 0.05% |
266,700
+148,400
| +125% | +$20.4M |
|
428
Amer Sports
AS
$19.5B
| $39.8M | 0.05% |
1,027,700
+395,062
| +62% | +$12.2M |
|
429
FTI Consulting
FCN
$4.16B
| $39.8M | 0.05% |
246,200
+83,600
| +51% | +$13.6M |
|
430
Descartes Systems
DSGX
$6.62B
| $39.6M | 0.05% |
390,000
-3,600
| -0.9% | -$380K |
|
431
HSBC
HSBC
$357B
| $39.6M | 0.05% |
651,222
+256,600
| +65% | +$14.6M |
|
432
BP
BP
$110B
| $39.4M | 0.05% |
1,316,600
+710,200
| +117% | +$20.8M |
|
433
JB Hunt Transport Services
JBHT
$25.8B
| $39.3M | 0.05% |
273,544
+106,500
| +64% | +$14.7M |
|
434
IES Holdings
IESC
$15.7B
| $39.3M | 0.05% |
132,532
-17,900
| -12% | -$4.22M |
|
435
Mueller Industries
MLI
$15.1B
| $39.2M | 0.05% |
987,400
+376,000
| +61% | +$14.2M |
|
436
State Street Health Care Select Sector SPDR ETF
XLV
$44B
| $39.1M | 0.05% |
290,000
+181,300
| +167% | +$24.5M |
|
437
TFS Financial
TFSL
$4.89B
| $38.8M | 0.05% |
2,993,091
-167,500
| -5% | -$2.16M |
|
438
F5
FFIV
$23.7B
| $38.4M | 0.05% |
130,562
-121,174
| -48% | -$33.5M |
|
439
Limbach Holdings
LMB
$545M
| $38M | 0.05% |
270,971
-45,700
| -14% | -$5.19M |
|
440
SEI Investments
SEIC
$12.5B
| $37.9M | 0.05% |
421,926
+224,100
| +113% | +$18.1M |
|
441
Medtronic
MDT
$116B
| $37.7M | 0.05% |
+432,541
| New | +$36.7M |
|
442
BigBear.ai
BBAI
$1.56B
| $37.7M | 0.05% |
5,547,951
+3,933,500
| +244% | +$14.2M |
|
443
XPeng
XPEV
$11.2B
| $37.6M | 0.05% |
2,100,367
-639,100
| -23% | -$12.5M |
|
444
Upwork
UPWK
$1.03B
| $37.4M | 0.05% |
2,786,115
+138,600
| +5% | +$1.99M |
|
445
Southern Copper
SCCO
$163B
| $37.3M | 0.05% |
387,234
-15,386
| -4% | -$1.34M |
|
446
CarMax
KMX
$8.26B
| $37.3M | 0.05% |
554,800
+487,300
| +722% | +$32.8M |
|
447
Dynatrace
DT
$14.3B
| $37.2M | 0.05% |
673,958
-159,000
| -19% | -$7.96M |
|
448
Banco de Chile
BCH
$20.5B
| $37.1M | 0.05% |
1,218,994
-62,200
| -5% | -$1.83M |
|
449
Samsara
IOT
$22.8B
| $37M | 0.05% |
+931,162
| New | +$38.5M |
|
450
FirstEnergy
FE
$27B
| $37M | 0.05% |
918,200
+828,992
| +929% | +$34.2M |
|
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Jim Simons's Q2 2025 Portfolio in Review
As of Q2 2025, Jim Simons held 4,018 positions worth $75.2B, up 14% from $66.1B the previous quarter. Its ten largest holdings account for 12% of the portfolio.
Jim Simons's Q2 2025 filing shows 612 new, 1,577 increased, 1,314 reduced and 496 closed positions. Its largest new stake was UnitedHealth: 1,352,129 shares worth $422M. The largest sale was Broadcom, an estimated $527M.
By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 17% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Jim Simons's largest Q2 2025 buy was UnitedHealth: 1,352,129 shares worth $422M.
- Jim Simons added most to NVIDIA in Q2 2025, an estimated $798M increase.
- Jim Simons's biggest Q2 2025 reduction was Broadcom, cutting an estimated $527M.
- Jim Simons fully exited Advanced Micro Devices in Q2 2025, selling an estimated $328M.
- Jim Simons's ten largest holdings make up 12% of its $75.2B portfolio in Q2 2025.
- Jim Simons opened 612 new positions and closed 496 in Q2 2025.
- Jim Simons's portfolio value rose 14% quarter-over-quarter to $75.2B.
Based on Renaissance Technologies's 13F filing for Q2 2025, filed 13 Aug 2025.