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Jim Simons Renaissance Technologies
AUM
$72.6B
Turnover
31.08%
1-Year Est. Return
54.88%
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.
This Fund
S&P 500
This Quarter Est. Return
+24.48%
1 Year Est. Return
+54.88%
3 Year Est. Return
+169.34%
5 Year Est. Return
+186.18%
10 Year Est. Return
+887.93%
AUM
$72.6B
AUM Growth
+$8.69B
(+14%)
Cap. Flow
+$958M
Cap. Flow % of AUM
Cap. Flow %
1.32%
Top 10 Holdings %
Top 10 Hldgs %
12.01%
Holding
3,761
New
548
Increased
1,084
Reduced
1,502
Closed
621
Avg Time Held
3.5
years
Top 10 Avg Time Held
1.5
years
Top 20 Avg Time Held
1.3
years
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Meta Platforms (Facebook)
META
|
+$1.08B |
| 2 |
NVIDIA
NVDA
|
+$938M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$639M |
| 4 |
Netflix
NFLX
|
+$598M |
| 5 |
Amazon
AMZN
|
+$575M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Micron Technology
MU
|
+$1.46B |
| 2 |
Sandisk
SNDK
|
+$1.13B |
| 3 |
Apple
AAPL
|
+$426M |
| 4 |
Linde
LIN
|
+$316M |
| 5 |
Vertiv
VRT
|
+$297M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 23.58% |
| 2 | Healthcare | 14.83% |
| 3 | Consumer Discretionary | 11.24% |
| 4 | Industrials | 10.49% |
| 5 | Communication Services | 8.91% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
2976
DELISTED
Electro-Sensors
ELSE
| $101K | ﹤0.01% |
13,200
-60,700
| -82% | -$431K |
2013 Q2
52 quarters
|
|
2977
CalciMedica
CALC
$7.37M
| $100K | ﹤0.01% |
19,460
-6,155
| -24% | -$21.8K |
2024 Q4
6 quarters
|
|
2978
Jasper Therapeutics
JSPR
$16.9M
| $100K | ﹤0.01% |
237,900
+60,400
| +34% | +$45.2K |
2025 Q2
4 quarters
|
|
|
BTLN
2979
Brightline Interactive
BTLN
$10.1M
| $98.9K | ﹤0.01% |
16,050
-687
| -4% | -$3.68K |
2025 Q1
5 quarters
|
|
2980
aTyr Pharma
ATYR
$17.4M
| $98.6K | ﹤0.01% |
165,222
+124,700
| +308% | +$81.5K |
2026 Q1
1 quarter
|
|
2981
Ebang International Holdings
EBON
$11.6M
| $97.9K | ﹤0.01% |
44,913
-2,300
| -5% | -$5.05K |
2021 Q4
18 quarters
|
|
2982
Fractyl Health
GUTS
$18.2M
| $97.1K | ﹤0.01% |
10,183
+7,250
| +247% | +$62K |
2025 Q3
3 quarters
|
|
2983
Altisource Portfolio Solutions SA Net Settle Stakeholder Warrants
ASPSW
$7.93M
| $96.5K | ﹤0.01% |
241,222
-49,300
| -17% | -$19.6K |
2025 Q2
4 quarters
|
|
2984
XBiotech
XBIT
$61.6M
| $95.8K | ﹤0.01% |
41,663
+19,225
| +86% | +$46.5K |
2026 Q1
1 quarter
|
|
2985
Codexis
CDXS
$138M
| $93.8K | ﹤0.01% |
41,500
-157,233
| -79% | -$391K |
2025 Q1
5 quarters
|
|
2986
GreenPower Motor Co
GP
$3.11M
| $93.4K | ﹤0.01% |
+11,115
| New | +$60.7K |
2026 Q2
0 quarters
|
|
2987
International Tower Hill Mines
THM
$563M
| $92.7K | ﹤0.01% |
46,571
-83,024
| -64% | -$199K |
2026 Q1
1 quarter
|
|
2988
American Shared Hospital Services
AMS
$8.25M
| $91.2K | ﹤0.01% |
57,695
+8,495
| +17% | +$12.5K |
2021 Q3
19 quarters
|
|
2989
TOP Financial Group
TOP
$1.8B
| $91K | ﹤0.01% |
9,940
+200
| +2% | +$983 |
2024 Q4
6 quarters
|
|
2990
Bragg Gaming Group
BRAG
$35.7M
| $87.4K | ﹤0.01% |
50,800
-300
| -0.6% | -$549 |
2023 Q2
12 quarters
|
|
2991
BingEx Ltd
FLX
$110M
| $87.3K | ﹤0.01% |
41,005
-36,295
| -47% | -$89K |
2025 Q2
4 quarters
|
|
2992
SuperX AI Technology Ltd
SUPX
$286M
| $87.2K | ﹤0.01% |
10,900
-46,500
| -81% | -$407K |
2025 Q4
2 quarters
|
|
2993
ReWalk Robotics
LFWD
$16.4M
| $86.8K | ﹤0.01% |
11,327
-100
| -0.9% | -$699 |
2022 Q1
17 quarters
|
|
2994
Atlantic American Corp
AAME
$32M
| $86.5K | ﹤0.01% |
51,800
+4,900
| +10% | +$10.8K |
2013 Q2
52 quarters
|
|
2995
Nerdy
NRDY
$52.1M
| $85.2K | ﹤0.01% |
6,200
+1,467
| +31% | +$19.2K |
2021 Q4
18 quarters
|
|
2996
Aprea Therapeutics
APRE
$6.77M
| $84.9K | ﹤0.01% |
105,800
+80,700
| +322% | +$67.3K |
2026 Q1
1 quarter
|
|
2997
X4 Pharmaceuticals
XFOR
$301M
| $84.5K | ﹤0.01% |
+18,100
| New | +$74.3K |
2026 Q2
0 quarters
|
|
2998
Yext
YEXT
$707M
| $84.1K | ﹤0.01% |
18,000
-24,800
| -58% | -$96.3K |
2021 Q2
20 quarters
|
|
2999
J-Long Group
JL
$17.3M
| $83.4K | ﹤0.01% |
14,200
+3,775
| +36% | +$24.2K |
2026 Q1
1 quarter
|
|
3000
Cardlytics
CDLX
$11M
| $82.6K | ﹤0.01% |
18,405
+7,155
| +64% | +$53.5K |
2025 Q4
2 quarters
|
|
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Jim Simons's Q2 2026 Portfolio in Review
As of Q2 2026, Jim Simons held 3,761 positions worth $72.6B, up 14% from $63.9B the previous quarter. Its ten largest holdings account for 12% of the portfolio.
Jim Simons's Q2 2026 filing shows 548 new, 1,084 increased, 1,502 reduced and 621 closed positions. Its largest new stake was Amazon: 2,290,710 shares worth $546M. The largest sale was Micron Technology, an estimated $1.46B.
By sector, the portfolio is most concentrated in Technology at 24% of assets, up from 22% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Jim Simons's largest Q2 2026 buy was Amazon: 2,290,710 shares worth $546M.
- Jim Simons added most to Meta Platforms (Facebook) in Q2 2026, an estimated $1.08B increase.
- Jim Simons's biggest Q2 2026 reduction was Micron Technology, cutting an estimated $1.46B.
- Jim Simons fully exited Applovin in Q2 2026, selling an estimated $174M.
- Jim Simons's ten largest holdings make up 12% of its $72.6B portfolio in Q2 2026.
- Jim Simons opened 548 new positions and closed 621 in Q2 2026.
- Jim Simons's portfolio value rose 14% quarter-over-quarter to $72.6B.
Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.