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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
WAFD icon
1726
WaFd
WAFD
$2.81B
$3.08M ﹤0.01%
80,229
+68,600
+590% +$2.42M
RGNX icon
1727
Regenxbio
RGNX
$704M
$3.08M ﹤0.01%
256,686
-48,600
-16% -$403K
AKTS
1728
Aktis Oncology
AKTS
$1.32B
$3.07M ﹤0.01%
+95,400
New +$1.96M
INGN icon
1729
Inogen
INGN
$154M
$3.07M ﹤0.01%
476,700
-2,100
-0.4% -$13.9K
USRT icon
1730
iShares Core US REIT ETF
USRT
$4.63B
$3.07M ﹤0.01%
+46,219
New +$2.98M
BRCB
1731
Black Rock Coffee Bar Inc
BRCB
$178M
$3.06M ﹤0.01%
368,620
+161,020
+78% +$1.6M
BY icon
1732
Byline Bancorp
BY
$1.78B
$3.04M ﹤0.01%
+80,600
New +$2.71M
SGML icon
1733
Sigma Lithium
SGML
$1.27B
$3.03M ﹤0.01%
+239,700
New +$4.03M
LLYVK icon
1734
Liberty Live Group Series C
LLYVK
$9.92B
$3.02M ﹤0.01%
+28,600
New +$2.79M
ZG icon
1735
Zillow
ZG
$8.15B
$3.02M ﹤0.01%
96,200
-124,563
-56% -$4.81M
TAN icon
1736
Invesco Solar ETF
TAN
$1.38B
$3.01M ﹤0.01%
+50,955
New +$3.09M
SAH icon
1737
Sonic Automotive
SAH
$2.51B
$3.01M ﹤0.01%
35,500
-52,626
-60% -$4.04M
ROCK icon
1738
Gibraltar Industries
ROCK
$1.45B
$3.01M ﹤0.01%
66,668
+51,168
+330% +$2M
TSQ icon
1739
Townsquare Media
TSQ
$104M
$3M ﹤0.01%
424,463
-17,000
-4% -$110K
WGMI icon
1740
CoinShares ETF Trust CoinShares Bitcoin Mining ETF
WGMI
$237M
$3M ﹤0.01%
+47,544
New +$2.71M
VCTR icon
1741
Victory Capital Holdings
VCTR
$7.27B
$2.99M ﹤0.01%
+35,600
New +$2.87M
BFC icon
1742
Bank First Corp
BFC
$1.76B
$2.98M ﹤0.01%
20,100
-13,700
-41% -$1.95M
IMPP icon
1743
Imperial Petroleum
IMPP
$210M
$2.98M ﹤0.01%
646,545
+97,405
+18% +$474K
ESGU icon
1744
iShares ESG Aware MSCI USA ETF
ESGU
$18.5B
$2.98M ﹤0.01%
+18,200
New +$2.88M
KYTX icon
1745
Kyverna Therapeutics
KYTX
$500M
$2.98M ﹤0.01%
333,899
-33,593
-9% -$298K
LTBR icon
1746
Lightbridge
LTBR
$327M
$2.97M ﹤0.01%
338,400
-315,500
-48% -$3.55M
JMBS icon
1747
Janus Henderson Mortgage-Backed Securities ETF
JMBS
$6.77B
$2.97M ﹤0.01%
66,083
+9,783
+17% +$442K
CRNC icon
1748
Cerence
CRNC
$389M
$2.97M ﹤0.01%
262,568
+230,700
+724% +$2.26M
INNV icon
1749
InnovAge Holding
INNV
$1.45B
$2.96M ﹤0.01%
249,633
-121,184
-33% -$992K
SCHH icon
1750
Schwab US REIT ETF
SCHH
$11.4B
$2.96M ﹤0.01%
+124,900
New +$2.91M

Similar funds

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.