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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 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
DFAE icon
3276
Dimensional Emerging Core Equity Market ETF
DFAE
$9.6B
– –
-43,100
Closed -$1.46M –
DFAS icon
3277
U.S. Small Cap Portfolio ETF Class Shares
DFAS
$14.9B
– –
-12,400
Closed -$882K –
DFAX icon
3278
Dimensional World ex US Core Equity 2 ETF
DFAX
$12.2B
– –
-10,900
Closed -$370K –
DFEM icon
3279
Dimensional Emerging Markets Core Equity 2 ETF
DFEM
$9.18B
– –
-38,000
Closed -$1.31M –
DFIV icon
3280
Dimensional International Value ETF
DFIV
$21.7B
– –
-12,900
Closed -$681K –
DFUV icon
3281
Dimensional US Marketwide Value ETF
DFUV
$15.4B
– –
-35,100
Closed -$1.7M –
DHIL icon
3282
DELISTED
Diamond Hill
DHIL
– –
-97,046
Closed -$16.7M –
DINO icon
3283
HF Sinclair
DINO
$22.1B
– –
-152,142
Closed -$9.49M –
DK icon
3284
Delek US
DK
$4.6B
– –
-159,269
Closed -$7.18M –
DLN icon
3285
WisdomTree US LargeCap Dividend Fund
DLN
$6.29B
– –
-7,200
Closed -$643K –
DLO icon
3286
dLocal
DLO
$4.33B
– –
-774,342
Closed -$10M –
DLX icon
3287
Deluxe
DLX
$1.05B
– –
-51,230
Closed -$1.41M –
DMAC icon
3288
DiaMedica Therapeutics
DMAC
$424M
– –
-52,523
Closed -$356K –
DOG icon
3289
ProShares Short Dow30
DOG
$108M
– –
-85,600
Closed -$2.09M –
DOMH icon
3290
Dominari Holdings
DOMH
$45.6M
– –
-132,362
Closed -$430K –
DORM icon
3291
Dorman Products
DORM
$3.6B
– –
-42,200
Closed -$4.4M –
DPST icon
3292
Direxion Daily Regional Banks Bull 3X ETF
DPST
$320M
– –
-29,300
Closed -$2.83M –
DRTS icon
3293
Alpha Tau Medical
DRTS
$1.17B
– –
-40,457
Closed -$286K –
DT icon
3294
Dynatrace
DT
$17.8B
– –
-574,400
Closed -$21.2M –
DV icon
3295
DoubleVerify
DV
$2.11B
– –
-797,300
Closed -$7.57M –
AXIA.PR
3296
DELISTED
AXIA Energia American Depositary Shares Preferred Class B1
AXIA.PR
– –
-20,500
Closed -$257K –
ECH icon
3297
iShares MSCI Chile ETF
ECH
$914M
– –
-26,400
Closed -$1.05M –
ECL icon
3298
Ecolab
ECL
$80.2B
– –
-313,397
Closed -$83.4M –
EFAV icon
3299
iShares MSCI EAFE Min Vol Factor ETF
EFAV
$5.41B
– –
-4,100
Closed -$375K –
EHAB icon
3300
DELISTED
Enhabit
EHAB
– –
-787,768
Closed -$11.1M –

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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.