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JO

John Overdeck Two Sigma Investments

AUM $138B
1-Year Est. Return 41.87%
 

John Overdeck is a co-founder of Two Sigma Investments, one of the world’s leading quantitative and technology-driven investment firms. Two Sigma applies data science, machine learning, and large-scale computing to markets across asset classes. Overdeck’s firm is a central reference point in discussions of modern systematic investing.

This Fund
S&P 500
This Quarter Est. Return
+14.35%
1 Year Est. Return
+41.87%
3 Year Est. Return
+122.61%
5 Year Est. Return
+129.48%
10 Year Est. Return
+649.67%
AUM
$56.5B
AUM Growth
+$9.69B
Cap. Flow
+$2.96B
Cap. Flow %
5.25%
Top 10 Hldgs %
7.66%
Holding
3,681
New
509
Increased
1,200
Reduced
1,275
Closed
531

Top Buys

Rank Stock Value
1
IGV icon
iShares Expanded Tech-Software Sector ETF
IGV
+$312M
2
UNH icon
UnitedHealth
UNH
+$286M
3
DUOL icon
Duolingo
DUOL
+$247M
4
AON icon
Aon
AON
+$226M
5
CB icon
Chubb
CB
+$221M

Top Sells

Rank Stock Value
1
AVGO icon
Broadcom
AVGO
+$338M
2
MRVL icon
Marvell Technology
MRVL
+$241M
3
AMD icon
Advanced Micro Devices
AMD
+$240M
4
NOW icon
ServiceNow
NOW
+$203M
5
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$193M

Sector Composition

Rank Sector Weight
1 Technology 16.79%
2 Financials 14.46%
3 Healthcare 12.9%
4 Consumer Discretionary 8.97%
5 Industrials 8.82%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
WOW
3501
DELISTED
WideOpenWest
WOW
– –
-53,327
Closed -$264K
WS icon
3502
Worthington Steel
WS
$1.78B
– –
-24,334
Closed -$616K
WSM icon
3503
Williams-Sonoma
WSM
$28B
– –
-55,495
Closed -$8.77M
WTM icon
3504
White Mountains Insurance
WTM
$5.04B
– –
-300
Closed -$578K
WW
3505
DELISTED
WW International
WW
– –
-129,709
Closed -$67.8K
XAR icon
3506
State Street SPDR S&P Aerospace & Defense ETF
XAR
$6.19B
– –
-4,400
Closed -$707K
XBIT icon
3507
XBiotech
XBIT
$69.5M
– –
-12,393
Closed -$40.2K
XENE icon
3508
Xenon Pharmaceuticals
XENE
$5.88B
– –
-236,983
Closed -$7.95M
XLB icon
3509
State Street Materials Select Sector SPDR ETF
XLB
$8.87B
– –
-2,094,200
Closed -$90M
XLE icon
3510
CALL
State Street Energy Select Sector SPDR ETF
XLE
$41.7B
– –
-94,200
Closed -$4.4M
XLE icon
3511
PUT
State Street Energy Select Sector SPDR ETF
XLE
$41.7B
– –
-94,200
Closed -$4.4M
XLF icon
3512
CALL
State Street Financial Select Sector SPDR ETF
XLF
$57.8B
– –
-389,700
Closed -$19.4M
XLF icon
3513
PUT
State Street Financial Select Sector SPDR ETF
XLF
$57.8B
– –
-413,800
Closed -$20.6M
XLU icon
3514
State Street Utilities Select Sector SPDR ETF
XLU
$22.2B
– –
-3,407,400
Closed -$134M
XOM icon
3515
ExxonMobil
XOM
$679B
– –
-15,566
Closed -$1.85M
XOP icon
3516
State Street SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$3.93B
– –
-371,089
Closed -$48.9M
XRAY icon
3517
Dentsply Sirona
XRAY
$2.18B
– –
-23,934
Closed -$358K
XRT icon
3518
State Street SPDR S&P Retail ETF
XRT
$491M
– –
-4,100
Closed -$283K
XSHQ icon
3519
Invesco S&P SmallCap Quality ETF
XSHQ
$319M
– –
-20,300
Closed -$802K
XTN icon
3520
State Street SPDR S&P Transportation ETF
XTN
$378M
– –
-3,800
Closed -$281K
YALA
3521
Yalla Group
YALA
$856M
– –
-13,561
Closed -$70.8K
YCBD icon
3522
cbdMD
YCBD
$5.7M
– –
-1,546
Closed -$2.84K
YMM icon
3523
Full Truck Alliance
YMM
$9.1B
– –
-534,601
Closed -$6.83M
ZBH icon
3524
Zimmer Biomet
ZBH
$19.3B
– –
-30,400
Closed -$3.44M
ZCMD icon
3525
Zhongchao
ZCMD
$5.72M
– –
-19
Closed -$17.7K
139 140
141
142 143

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John Overdeck's Q2 2025 Portfolio in Review

As of Q2 2025, John Overdeck held 3,681 positions worth $56.5B, up 21% from $46.8B the previous quarter. Its ten largest holdings account for 7.7% of the portfolio.

John Overdeck deployed $2.96B of net new capital in Q2 2025, opening 509 new positions and adding to 1,200 existing holdings. Its largest new stake was iShares Expanded Tech-Software Sector ETF: 3,154,300 shares worth $345M.

By sector, the portfolio is most concentrated in Technology at 17% of assets, down from 18% a quarter earlier, followed by Financials and Healthcare.

On the sell side, the largest reduction was Broadcom, an estimated $338M trimmed.

  • John Overdeck's largest Q2 2025 buy was iShares Expanded Tech-Software Sector ETF: 3,154,300 shares worth $345M.
  • John Overdeck added most to UnitedHealth in Q2 2025, an estimated $286M increase.
  • John Overdeck's biggest Q2 2025 reduction was Broadcom, cutting an estimated $338M.
  • John Overdeck fully exited State Street Utilities Select Sector SPDR ETF in Q2 2025, selling an estimated $134M.
  • John Overdeck's ten largest holdings make up 7.7% of its $56.5B portfolio in Q2 2025.
  • John Overdeck opened 509 new positions and closed 531 in Q2 2025.
  • John Overdeck's portfolio value rose 21% quarter-over-quarter to $56.5B.

Based on Two Sigma Investments's 13F filing for Q2 2025, filed 14 Aug 2025.