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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
REM icon
3401
iShares Mortgage Real Estate ETF
REM
$544M
– –
-584,158
Closed -$13.1M
LNAI
3402
Lunai Bioworks
LNAI
$9.75M
– –
-354
Closed -$15.4K
RERE
3403
ATRenew
RERE
$921M
– –
-108,516
Closed -$319K
RFL icon
3404
Rafael Holdings
RFL
$112M
– –
-23,436
Closed -$43.2K
RGA icon
3405
Reinsurance Group of America
RGA
$15.9B
– –
-51,528
Closed -$10.1M
RLX icon
3406
RLX Technology
RLX
$2.21B
– –
-1,132,917
Closed -$2.13M
RMAX icon
3407
RE/MAX Holdings
RMAX
$290M
– –
-21,479
Closed -$180K
RNAM
3408
DELISTED
Avidity Biosciences
RNAM
– –
-28,000
Closed -$827K
RNAC icon
3409
Cartesian Therapeutics
RNAC
$304M
– –
-11,015
Closed -$145K
ROST icon
3410
Ross Stores
ROST
$76.7B
– –
-46,711
Closed -$5.97M
RPV icon
3411
Invesco S&P 500 Pure Value ETF
RPV
$1.76B
– –
-117,900
Closed -$10.9M
RRR icon
3412
Red Rock Resorts
RRR
$3.61B
– –
-11,309
Closed -$490K
RS icon
3413
Reliance Steel & Aluminium
RS
$19.8B
– –
-7,500
Closed -$2.17M
RSPM icon
3414
Invesco S&P 500 Equal Weight Materials ETF
RSPM
$193M
– –
-32,000
Closed -$1.02M
RSPU icon
3415
Invesco S&P 500 Equal Weight Utilities ETF
RSPU
$524M
– –
-29,600
Closed -$2.06M
RTC
3416
DELISTED
Baijiayun Group
RTC
– –
-10,915
Closed -$2.32K
RWJ icon
3417
Invesco S&P SmallCap 600 Revenue ETF
RWJ
$2.09B
– –
-118,825
Closed -$4.84M
RZLT icon
3418
Rezolute
RZLT
$490M
– –
-42,531
Closed -$123K
SAM icon
3419
Boston Beer
SAM
$1.91B
– –
-916
Closed -$219K
SCHD icon
3420
Schwab US Dividend Equity ETF
SCHD
$111B
– –
-1,207,941
Closed -$33.8M
SCLX icon
3421
Scilex Holding
SCLX
$40.3M
– –
-1,270
Closed -$11K
SCS
3422
DELISTED
Steelcase
SCS
– –
-108,701
Closed -$1.19M
SCSC icon
3423
Scansource
SCSC
$1.1B
– –
-6,035
Closed -$205K
SDY icon
3424
State Street SPDR S&P Dividend ETF
SDY
$22.1B
– –
-3,359
Closed -$456K
SEM
3425
DELISTED
Select Medical
SEM
– –
-20,030
Closed -$335K
135 136
137
138 139

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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.