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 | |
|---|---|---|---|---|---|---|
2076
Petco
WOOF
$780M
| $2.11M | ﹤0.01% |
744,500
+280,700
| +61% | +$873K |
|
2077
NETSCOUT
NTCT
$2.87B
| $2.1M | ﹤0.01% |
+84,700
| New | +$1.88M |
|
2078
Epsilon Energy
EPSN
$161M
| $2.1M | ﹤0.01% |
284,200
+125,200
| +79% | +$893K |
|
2079
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27.3B
| $2.1M | ﹤0.01% |
3,700
-9,800
| -73% | -$5.26M |
|
2080
Forum Energy Technologies
FET
$932M
| $2.09M | ﹤0.01% |
107,500
-12,275
| -10% | -$199K |
|
2081
Mistras Group
MG
$556M
| $2.09M | ﹤0.01% |
261,000
-1,000
| -0.4% | -$8.41K |
|
2082
iShares Russell Mid-Cap ETF
IWR
$58.3B
| $2.09M | ﹤0.01% |
22,700
+14,300
| +170% | +$1.24M |
|
2083
Aclaris Therapeutics
ACRS
$860M
| $2.08M | ﹤0.01% |
1,464,778
+513,384
| +54% | +$695K |
|
2084
Omega Flex
OFLX
$304M
| $2.06M | ﹤0.01% |
63,580
+16,500
| +35% | +$530K |
|
2085
Hanover Insurance
THG
$7.74B
| $2.06M | ﹤0.01% |
12,100
+800
| +7% | +$134K |
|
2086
HUB Group
HUBG
$2.46B
| $2.06M | ﹤0.01% |
+61,472
| New | +$2.06M |
|
2087
Companhia Siderúrgica Nacional
SID
$1.19B
| $2.05M | ﹤0.01% |
1,467,100
+227,987
| +18% | +$352K |
|
2088
Kinsale Capital Group
KNSL
$8.51B
| $2.05M | ﹤0.01% |
+4,237
| New | +$1.98M |
|
2089
Forestar Group
FOR
$1.49B
| $2.05M | ﹤0.01% |
102,480
-48,600
| -32% | -$960K |
|
|
GB
2090
DELISTED
Global Blue Group Holding
GB
| $2.05M | ﹤0.01% |
274,200
+108,900
| +66% | +$808K |
|
2091
Ecovyst
ECVT
$1.09B
| $2.05M | ﹤0.01% |
248,600
-34,100
| -12% | -$239K |
|
2092
Parke Bancorp
PKBK
$409M
| $2.04M | ﹤0.01% |
100,147
+1,600
| +2% | +$30.6K |
|
|
JBGS
2093
JBG SMITH
JBGS
$691M
| $2.04M | ﹤0.01% |
117,800
-8,800
| -7% | -$143K |
|
2094
SelectQuote
SLQT
$126M
| $2.04M | ﹤0.01% |
856,000
-620,300
| -42% | -$1.63M |
|
2095
SoundThinking
SSTI
$107M
| $2.04M | ﹤0.01% |
156,032
+18,200
| +13% | +$284K |
|
2096
Zedge
ZDGE
$38.6M
| $2.03M | ﹤0.01% |
506,122
+42,300
| +9% | +$109K |
|
2097
QuinStreet
QNST
$1.19B
| $2.03M | ﹤0.01% |
125,900
+61,400
| +95% | +$985K |
|
2098
Sonida Senior Living
SNDA
$1.88B
| $2.02M | ﹤0.01% |
81,091
-900
| -1% | -$21.4K |
|
|
SKX
2099
DELISTED
Skechers
SKX
| $2.02M | ﹤0.01% |
+32,000
| New | +$1.84M |
|
2100
Taylor Devices
TAYD
$172M
| $2.02M | ﹤0.01% |
46,462
-8,800
| -16% | -$313K |
|
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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.