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Jim Simons

Jim Simons Renaissance Technologies

AUM $72.6B
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
Cap. Flow
+$958M
Cap. Flow %
1.32%
Top 10 Hldgs %
12.01%
Holding
3,761
New
548
Increased
1,084
Reduced
1,502
Closed
621

Top Sells

Rank Stock Value
1
MU icon
Micron Technology
MU
+$1.46B
2
SNDK
Sandisk
SNDK
+$1.13B
3
AAPL icon
Apple
AAPL
+$426M
4
LIN icon
Linde
LIN
+$316M
5
VRT icon
Vertiv
VRT
+$297M

Sector Composition

Rank Sector Weight
1 Technology 23.57%
2 Healthcare 14.84%
3 Consumer Discretionary 11.27%
4 Industrials 10.49%
5 Communication Services 8.87%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
NEWP
2526
New Pacific Metals
NEWP
$1.24B
$613K ﹤0.01%
152,372
-208,236
-58% -$1.02M
PAYP
2527
PayPay
PAYP
$9.92B
$612K ﹤0.01%
+42,700
New +$786K
SLNH icon
2528
Soluna Holdings
SLNH
$205M
$611K ﹤0.01%
452,600
-382,677
-46% -$554K
HBIO icon
2529
Harvard Bioscience
HBIO
$30.4M
$611K ﹤0.01%
99,327
-2,100
-2% -$12.6K
LSF icon
2530
Laird Superfood
LSF
$48.2M
$609K ﹤0.01%
129,600
-3,300
-2% -$11K
DFAT icon
2531
Dimensional US Targeted Value ETF
DFAT
$14.8B
$608K ﹤0.01%
8,705
-9,195
-51% -$614K
KLRS
2532
Kalaris Therapeutics
KLRS
$92.4M
$608K ﹤0.01%
149,351
+83,200
+126% +$432K
VOR icon
2533
Vor Biopharma
VOR
$1.38B
$608K ﹤0.01%
33,011
-95,828
-74% -$1.45M
AVUS icon
2534
Avantis US Equity ETF
AVUS
$14.4B
$602K ﹤0.01%
4,700
+2,200
+88% +$271K
MAIA icon
2535
MAIA Biotechnology
MAIA
$81.5M
$599K ﹤0.01%
+415,700
New +$552K
AGBK
2536
AGI Inc
AGBK
$998M
$597K ﹤0.01%
+84,318
New +$600K
CVM icon
2537
CEL-SCI Corp
CVM
$26M
$595K ﹤0.01%
572,460
+536,570
+1,495% +$1.18M
TISI icon
2538
Team
TISI
$101M
$595K ﹤0.01%
34,451
+3,000
+10% +$50K
RSVR
2539
Reservoir Media
RSVR
$656M
$595K ﹤0.01%
+60,123
New +$607K
AVLV icon
2540
Avantis US Large Cap Value ETF
AVLV
$18.4B
$593K ﹤0.01%
6,500
-23,300
-78% -$2.05M
PYPD icon
2541
PolyPid
PYPD
$91.7M
$592K ﹤0.01%
116,619
+98,023
+527% +$452K
NPWR icon
2542
NET Power
NPWR
$143M
$592K ﹤0.01%
354,206
-349,594
-50% -$633K
FURY
2543
Fury Gold Mines
FURY
$116M
$587K ﹤0.01%
1,087,423
-124,879
-10% -$71.7K
USEA icon
2544
United Maritime
USEA
$25.8M
$585K ﹤0.01%
222,572
-9,963
-4% -$23.4K
TARS icon
2545
Tarsus Pharmaceuticals
TARS
$3.02B
$585K ﹤0.01%
9,300
-64,100
-87% -$4.1M
EVEX icon
2546
Eve Holding
EVEX
$976M
$583K ﹤0.01%
232,226
-111,997
-33% -$323K
BZFD icon
2547
BuzzFeed
BZFD
$95M
$580K ﹤0.01%
397,303
+52,949
+15% +$60.9K
CBNK icon
2548
Capital Bancorp
CBNK
$616M
$579K ﹤0.01%
+16,500
New +$529K
CNTX icon
2549
Context Therapeutics
CNTX
$46.5M
$577K ﹤0.01%
1,041,399
+858,400
+469% +$1.74M
FMNB icon
2550
Farmers National Banc Corp
FMNB
$970M
$574K ﹤0.01%
39,335
-15,814
-29% -$223K

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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.