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 | |
|---|---|---|---|---|---|---|
1251
First Business Financial Services
FBIZ
$603M
| $7.63M | 0.01% |
150,665
+8,400
| +6% | +$403K |
|
1252
Cognex
CGNX
$10.4B
| $7.61M | 0.01% |
239,956
-30,394
| -11% | -$871K |
|
1253
Teleflex
TFX
$5.74B
| $7.61M | 0.01% |
+64,300
| New | +$8.11M |
|
1254
Playtika
PLTK
$934M
| $7.61M | 0.01% |
1,607,994
+100,700
| +7% | +$495K |
|
1255
Trade Desk
TTD
$6.5B
| $7.6M | 0.01% |
105,554
-1,179,346
| -92% | -$75.3M |
|
1256
Donegal Group Class A
DGICA
$693M
| $7.6M | 0.01% |
379,311
-1,700
| -0.4% | -$33K |
|
1257
Talkspace
TALK
$871M
| $7.58M | 0.01% |
2,726,700
-34,800
| -1% | -$103K |
|
1258
Ultragenyx Pharmaceutical
RARE
$2.63B
| $7.57M | 0.01% |
208,300
-91,300
| -30% | -$3.29M |
|
1259
Bumble
BMBL
$347M
| $7.57M | 0.01% |
1,148,600
+764,500
| +199% | +$3.86M |
|
|
TDAY
1260
USA Today Co
TDAY
$998M
| $7.56M | 0.01% |
2,110,924
+183,005
| +9% | +$613K |
|
1261
Foster
FSTR
$409M
| $7.55M | 0.01% |
345,282
-5,600
| -2% | -$110K |
|
1262
LendingTree
TREE
$450M
| $7.53M | 0.01% |
203,200
-27,900
| -12% | -$1.13M |
|
1263
Sonos
SONO
$1.87B
| $7.53M | 0.01% |
696,339
+683,539
| +5,340% | +$6.65M |
|
1264
IHS Holding
IHS
$2.82B
| $7.52M | 0.01% |
1,353,300
+170,200
| +14% | +$916K |
|
1265
SFL Corp
SFL
$1.62B
| $7.5M | 0.01% |
900,497
-388,800
| -30% | -$3.23M |
|
1266
World Acceptance Corp
WRLD
$896M
| $7.5M | 0.01% |
45,425
+1,600
| +4% | +$228K |
|
1267
Dana Inc
DAN
$3.22B
| $7.5M | 0.01% |
437,100
+321,921
| +279% | +$4.81M |
|
1268
HCI Group
HCI
$2.31B
| $7.48M | 0.01% |
49,119
-10,000
| -17% | -$1.54M |
|
1269
Travelzoo
TZOO
$74.9M
| $7.48M | 0.01% |
587,201
+11,000
| +2% | +$144K |
|
1270
Ternium
TX
$10.7B
| $7.46M | 0.01% |
247,900
-6,500
| -3% | -$186K |
|
1271
SmartFinancial
SMBK
$904M
| $7.46M | 0.01% |
220,774
+61,500
| +39% | +$1.9M |
|
1272
Hope Bancorp
HOPE
$1.84B
| $7.46M | 0.01% |
695,028
+187,164
| +37% | +$1.89M |
|
1273
Macy's
M
$6.2B
| $7.46M | 0.01% |
+639,564
| New | +$7.41M |
|
1274
iShares Core Universal USD Bond ETF
IUSB
$43.3B
| $7.44M | 0.01% |
160,900
-35,400
| -18% | -$1.62M |
|
1275
Westamerica Bancorp
WABC
$1.38B
| $7.43M | 0.01% |
153,331
+29,300
| +24% | +$1.4M |
|
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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.