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Jim Simons

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
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
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 icon
Meta Platforms (Facebook)
META
+$1.08B
2
NVDA icon
NVIDIA
NVDA
+$938M
3
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$639M
4
NFLX icon
Netflix
NFLX
+$598M
5
AMZN icon
Amazon
AMZN
+$575M

Top Sells

Rank Stock Value
1
MU icon
Micron Technology
MU
+$1.46B
2
SNDK icon
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 23.58%
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
ZBH icon
3676
Zimmer Biomet
ZBH
$18.1B
– –
-60,536
Closed -$5.47M –
ZIM icon
3677
ZIM Integrated Shipping Services
ZIM
$3.52B
– –
-2,936,288
Closed -$77.4M –
ZLAB icon
3678
Zai Lab
ZLAB
$2.6B
– –
-14,300
Closed -$269K –
FLUT icon
3679
Flutter Entertainment
FLUT
$13.1B
– –
-397,860
Closed -$40.6M –
FBLG icon
3680
FibroBiologics
FBLG
$6.88M
– –
-15,997
Closed -$21.1K –
MSTY icon
3681
YieldMax MSTR Option Income Strategy ETF
MSTY
$960M
– –
-76,700
Closed -$1.63M –
MF icon
3682
MindForge
MF
$20M
– –
-552
Closed -$46.1K –
MAMO icon
3683
Massimo Group
MAMO
$38.6M
– –
-12,600
Closed -$12.6K –
ZONE icon
3684
Zone Frontier Inc.
ZONE
$48.3M
– –
-2,557,895
Closed -$911K –
SVCO icon
3685
Silvaco Group
SVCO
$210M
– –
-37,600
Closed -$266K –
ETH icon
3686
Grayscale Ethereum Staking Mini ETF Shares
ETH
$2.02B
– –
-166,494
Closed -$3.31M –
MSTX icon
3687
Defiance Daily Target 2x Long MSTR ETF
MSTX
$282M
– –
-28,000
Closed -$547K –
NCT
3688
Intercont (Cayman) Ltd
NCT
$1.38M
– –
-662
Closed -$30.4K –
FLYE icon
3689
Fly-E Group
FLYE
$4.34M
– –
-12,600
Closed -$26.5K –
LIF icon
3690
Life360
LIF
$3.35B
– –
-144,300
Closed -$5.89M –
QXO icon
3691
QXO Inc
QXO
$11.3B
– –
-98,800
Closed -$1.92M –
ETHD icon
3692
ProShares UltraShort Ether ETF
ETHD
$70.9M
– –
-23,100
Closed -$1.45M –
ETHT icon
3693
ProShares Ultra Ether ETF
ETHT
$240M
– –
-35,420
Closed -$531K –
RAPP icon
3694
Rapport Therapeutics
RAPP
$1.32B
– –
-9,700
Closed -$304K –
WAY icon
3695
Waystar Holding Corp
WAY
$5.25B
– –
-423,200
Closed -$10.2M –
ONIT icon
3696
Onity Group
ONIT
$214M
– –
-34,763
Closed -$1.37M –
ABVE
3697
DELISTED
Above Food Ingredients Inc
ABVE
– –
-832,717
Closed -$841K –
PSIG icon
3698
PS International Group
PSIG
$68.4M
– –
-26,401
Closed -$162K –
ETHW icon
3699
Bitwise Ethereum ETF
ETHW
$256M
– –
-24,400
Closed -$366K –
ADGM icon
3700
Adagio Medical Holdings
ADGM
$2.72M
– –
-16,557
Closed -$19K –
146 147
148
149 150

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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.