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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
SF
3426
Stifel
SF
$12.2B
– –
-101,826
Closed -$6.4M
SHOO icon
3427
Steven Madden
SHOO
$3.37B
– –
-34,156
Closed -$910K
SITC icon
3428
SITE Centers
SITC
$161M
– –
-34,527
Closed -$443K
SITM icon
3429
SiTime
SITM
$18.5B
– –
-6,745
Closed -$1.03M
SKX
3430
DELISTED
Skechers
SKX
– –
-311,965
Closed -$17.7M
SLAB icon
3431
Silicon Laboratories
SLAB
$7.27B
– –
-2,363
Closed -$266K
SLGL icon
3432
Sol-Gel Technologies
SLGL
$254M
– –
-1,800
Closed -$9.36K
SLYV icon
3433
State Street SPDR S&P 600 Small Cap Value ETF
SLYV
$5.07B
– –
-156,752
Closed -$12.3M
SMH icon
3434
CALL
VanEck Semiconductor ETF
SMH
$68.6B
– –
-7,000
Closed -$1.48M
SMH icon
3435
PUT
VanEck Semiconductor ETF
SMH
$68.6B
– –
-7,000
Closed -$1.48M
SMIG icon
3436
Bahl & Gaynor Small/Mid Cap Income Growth ETF
SMIG
$1.49B
– –
-150,009
Closed -$4.28M
SNDL icon
3437
Sundial Growers
SNDL
$341M
– –
-119,950
Closed -$169K
SNPS icon
3438
Synopsys
SNPS
$76.2B
– –
-1,131
Closed -$485K
SO icon
3439
Southern Company
SO
$102B
– –
-4,800
Closed -$441K
SPHD icon
3440
Invesco S&P 500 High Dividend Low Volatility ETF
SPHD
$3.45B
– –
-31,900
Closed -$1.6M
SPHR icon
3441
PUT
Sphere Entertainment
SPHR
$5.69B
– –
-343,600
Closed -$11.2M
SPRY icon
3442
ARS Pharmaceuticals
SPRY
$547M
– –
-10,771
Closed -$135K
SPSM icon
3443
State Street SPDR Portfolio S&P 600 Small Cap ETF
SPSM
$17.1B
– –
-17,982
Closed -$733K
SPY icon
3444
CALL
State Street SPDR S&P 500 ETF Trust
SPY
$809B
– –
-6,000
Closed -$3.36M
SPY icon
3445
PUT
State Street SPDR S&P 500 ETF Trust
SPY
$809B
– –
-6,000
Closed -$3.36M
SPYD icon
3446
State Street SPDR Portfolio S&P 500 High Dividend ETF
SPYD
$7.79B
– –
-57,000
Closed -$2.52M
SPYV icon
3447
State Street SPDR Portfolio S&P 500 Value ETF
SPYV
$36.7B
– –
-9,600
Closed -$490K
SQNS
3448
Sequans Communications SA
SQNS
$45.9M
– –
-2,499
Closed -$52.5K
SRVR icon
3449
Pacer Data & Infrastructure Real Estate ETF
SRVR
$383M
– –
-10,300
Closed -$302K
STGW icon
3450
Stagwell
STGW
$2.13B
– –
-60,643
Closed -$367K
136 137
138
139 140

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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.