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 | |
|---|---|---|---|---|---|---|
676
Progress Software
PRGS
$1.79B
| $21.7M | 0.03% |
340,629
-198,400
| -37% | -$12.1M |
|
677
iRhythm Holdings
IRTC
$4.13B
| $21.7M | 0.03% |
141,200
+119,100
| +539% | +$15.4M |
|
678
Protolabs
PRLB
$2.17B
| $21.7M | 0.03% |
542,051
+10,400
| +2% | +$387K |
|
|
SFIX
679
Stitch Fix
SFIX
$474M
| $21.7M | 0.03% |
5,859,458
+134,900
| +2% | +$505K |
|
|
KRMN
680
Karman Holdings
KRMN
$8.21B
| $21.6M | 0.03% |
+428,400
| New | +$17.2M |
|
681
Bentley Systems
BSY
$10.8B
| $21.6M | 0.03% |
399,800
+112,300
| +39% | +$5.2M |
|
682
Watts Water Technologies
WTS
$12.9B
| $21.5M | 0.03% |
87,600
+41,300
| +89% | +$9.29M |
|
683
Watsco Inc
WSO
$12.8B
| $21.5M | 0.03% |
48,700
+10,700
| +28% | +$4.96M |
|
684
Popular Inc
BPOP
$11.2B
| $21.5M | 0.03% |
195,125
+191,362
| +5,085% | +$18.9M |
|
685
Sibanye-Stillwater
SBSW
$7.58B
| $21.4M | 0.03% |
2,967,604
+1,673,700
| +129% | +$9.15M |
|
686
Sensata Technologies
ST
$6.72B
| $21.4M | 0.03% |
710,000
+18,200
| +3% | +$447K |
|
687
LiveRamp
RAMP
$2.3B
| $21.4M | 0.03% |
646,972
+125,172
| +24% | +$3.64M |
|
688
Dentsply Sirona
XRAY
$2.27B
| $21.3M | 0.03% |
1,341,058
+1,091,836
| +438% | +$16.3M |
|
689
Digital Realty Trust
DLR
$72.9B
| $21.3M | 0.03% |
121,967
-372,416
| -75% | -$60.9M |
|
690
Keurig Dr Pepper
KDP
$40.2B
| $21.3M | 0.03% |
642,800
+530,500
| +472% | +$17.9M |
|
691
Vitamin Cottage Natural Grocers
NGVC
$632M
| $21.2M | 0.03% |
541,309
-37,200
| -6% | -$1.72M |
|
692
Rush Enterprises Class B
RUSHB
$9.18B
| $21M | 0.03% |
400,547
+11,500
| +3% | +$626K |
|
|
CSR
693
Centerspace
CSR
$925M
| $21M | 0.03% |
348,838
+20,284
| +6% | +$1.24M |
|
694
PagerDuty
PD
$876M
| $21M | 0.03% |
1,373,738
+116,900
| +9% | +$1.82M |
|
695
Unum
UNM
$14.5B
| $20.9M | 0.03% |
258,400
-205,200
| -44% | -$16.2M |
|
|
IMOS
696
ChipMOS TECHNOLOGIES
IMOS
$1.96B
| $20.9M | 0.03% |
1,152,190
-16,000
| -1% | -$283K |
|
697
Selective Insurance
SIGI
$5.59B
| $20.8M | 0.03% |
240,494
+186,300
| +344% | +$16.3M |
|
698
Elevance Health
ELV
$86.6B
| $20.8M | 0.03% |
+53,573
| New | +$21.5M |
|
699
Aramark
ARMK
$15.9B
| $20.8M | 0.03% |
497,200
+182,500
| +58% | +$6.78M |
|
700
TAL Education Group
TAL
$6.58B
| $20.7M | 0.03% |
2,029,200
-14,600
| -0.7% | -$151K |
|
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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.