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 | |
|---|---|---|---|---|---|---|
226
State Street SPDR Portfolio Short Term Corporate Bond ETF
SPSB
$10.8B
| $74.4M | 0.1% |
2,463,300
-1,184,400
| -32% | -$35.5M |
|
227
Alpha Metallurgical Resources
AMR
$1.95B
| $74.4M | 0.1% |
661,115
+78,100
| +13% | +$9.13M |
|
228
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
$17.9B
| $74.2M | 0.1% |
920,000
+712,500
| +343% | +$56.1M |
|
229
Grand Canyon Education
LOPE
$3.76B
| $73.4M | 0.1% |
388,502
+42,100
| +12% | +$7.8M |
|
230
Royal Bank of Canada
RY
$292B
| $73.4M | 0.1% |
558,094
+162,200
| +41% | +$19.8M |
|
231
S&P Global
SPGI
$120B
| $73.3M | 0.1% |
138,922
+16,800
| +14% | +$8.38M |
|
232
Rio Tinto
RIO
$164B
| $73.3M | 0.1% |
1,255,800
+698,400
| +125% | +$41.2M |
|
233
Viking Holdings
VIK
$45.3B
| $73.2M | 0.1% |
1,374,305
-911,800
| -40% | -$40.2M |
|
234
United States Lime & Minerals
USLM
$3.46B
| $71.4M | 0.1% |
715,850
-49,400
| -6% | -$4.83M |
|
235
JFrog
FROG
$10.4B
| $71.2M | 0.09% |
1,621,900
+294,500
| +22% | +$11.2M |
|
236
Dutch Bros
BROS
$8.66B
| $70.9M | 0.09% |
1,037,100
-265,200
| -20% | -$17.3M |
|
237
State Street SPDR Bloomberg High Yield Bond ETF
JNK
$7.3B
| $70.8M | 0.09% |
727,800
+686,500
| +1,662% | +$65.2M |
|
|
CPRX
238
DELISTED
Catalyst Pharmaceutical
CPRX
| $70.6M | 0.09% |
3,251,516
+295,200
| +10% | +$6.97M |
|
239
iShares Floating Rate Bond ETF
FLOT
$10.5B
| $70.3M | 0.09% |
1,378,385
-805,915
| -37% | -$40.9M |
|
|
QXO
240
QXO Inc
QXO
$16.8B
| $70.1M | 0.09% |
3,254,400
+2,150,200
| +195% | +$35.3M |
|
241
Comfort Systems
FIX
$59.4B
| $69.9M | 0.09% |
130,300
-900
| -0.7% | -$392K |
|
242
Arista Networks
ANET
$250B
| $69.5M | 0.09% |
678,900
-1,139,900
| -63% | -$98.6M |
|
243
American Airlines Group
AAL
$10.1B
| $69.4M | 0.09% |
6,182,271
-11,031,561
| -64% | -$118M |
|
|
MOMO
244
Hello Group
MOMO
$861M
| $69.1M | 0.09% |
8,190,290
-62,000
| -0.8% | -$406K |
|
245
Everest Group
EG
$14B
| $68.4M | 0.09% |
201,300
+123,600
| +159% | +$42.6M |
|
|
MZTI
246
The Marzetti Company
MZTI
$3.15B
| $67.9M | 0.09% |
393,180
+70,700
| +22% | +$12.2M |
|
247
Invesco Senior Loan ETF
BKLN
$6.75B
| $67.9M | 0.09% |
3,245,700
+2,338,632
| +258% | +$48.5M |
|
248
Astera Labs
ALAB
$54.1B
| $67.8M | 0.09% |
749,500
-677,200
| -47% | -$53.5M |
|
249
First Majestic Silver
AG
$9.35B
| $67.1M | 0.09% |
8,115,057
+6,814,917
| +524% | +$45.8M |
|
250
Colliers International
CIGI
$5.3B
| $67.1M | 0.09% |
513,800
-10,300
| -2% | -$1.25M |
|
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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.