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 | |
|---|---|---|---|---|---|---|
2951
Algoma Steel
ASTL
$467M
| $395K | ﹤0.01% |
57,400
-170,205
| -75% | -$950K |
|
2952
GrafTech
EAF
$203M
| $394K | ﹤0.01% |
40,510
-65,630
| -62% | -$580K |
|
|
ACCS
2953
ACCESS Newswire
ACCS
$18.7M
| $393K | ﹤0.01% |
31,938
-100
| -0.3% | -$964 |
|
2954
Richmond Mutual Bancorp
RMBI
$258M
| $393K | ﹤0.01% |
28,442
+7,900
| +38% | +$106K |
|
2955
Chicago Rivet & Machine Co
CVR
$9.98M
| $391K | ﹤0.01% |
32,010
-700
| -2% | -$8.14K |
|
2956
EuroDry
EDRY
$110M
| $391K | ﹤0.01% |
40,000
-300
| -0.7% | -$2.69K |
|
|
NEUE
2957
DELISTED
NeueHealth
NEUE
| $388K | ﹤0.01% |
56,163
| – | – |
|
2958
Owens Corning
OC
$12.2B
| $385K | ﹤0.01% |
+2,800
| New | +$387K |
|
2959
Spire Global
SPIR
$562M
| $384K | ﹤0.01% |
32,300
-47,800
| -60% | -$482K |
|
2960
LiveOne
LVO
$61.3M
| $384K | ﹤0.01% |
50,911
+2,400
| +5% | +$17.8K |
|
2961
Rapid Micro Biosystems
RPID
$84.8M
| $383K | ﹤0.01% |
110,987
+400
| +0.4% | +$1.16K |
|
2962
Coherus Oncology
CHRS
$179M
| $382K | ﹤0.01% |
522,925
+12,297
| +2% | +$10.6K |
|
2963
EVgo
EVGO
$528M
| $382K | ﹤0.01% |
+104,700
| New | +$359K |
|
2964
Smart Sand
SND
$219M
| $382K | ﹤0.01% |
190,100
-103,800
| -35% | -$210K |
|
2965
Direxion Daily Regional Banks Bull 3X ETF
DPST
$417M
| $382K | ﹤0.01% |
+4,400
| New | +$324K |
|
2966
Community Bank
CBU
$3.46B
| $381K | ﹤0.01% |
6,708
-5,600
| -45% | -$311K |
|
2967
Aligos Therapeutics
ALGS
$41.1M
| $379K | ﹤0.01% |
52,544
+12,968
| +33% | +$77.6K |
|
2968
Kyverna Therapeutics
KYTX
$490M
| $376K | ﹤0.01% |
122,417
-2,541
| -2% | -$6.29K |
|
2969
KORU Medical Systems
KRMD
$154M
| $374K | ﹤0.01% |
104,600
-99,856
| -49% | -$284K |
|
2970
Century Casinos
CNTY
$35.2M
| $373K | ﹤0.01% |
176,449
+3,300
| +2% | +$5.89K |
|
2971
Vertex
VERX
$2.07B
| $371K | ﹤0.01% |
+10,500
| New | +$400K |
|
2972
Mammoth Energy Services
TUSK
$158M
| $370K | ﹤0.01% |
132,172
-3,100
| -2% | -$7.93K |
|
|
BIOA
2973
BioAge Labs
BIOA
$472M
| $369K | ﹤0.01% |
+89,296
| New | +$360K |
|
|
PLTU
2974
Direxion Daily PLTR Bull 2X ETF
PLTU
$624M
| $369K | ﹤0.01% |
+6,000
| New | +$296K |
|
2975
Invesco S&P 500 High Dividend Low Volatility ETF
SPHD
$3.44B
| $366K | ﹤0.01% |
7,700
-35,300
| -82% | -$1.67M |
|
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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.