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John Overdeck

John Overdeck Two Sigma Investments

AUM $138B Turnover 29.02%
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
+21.14%
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
$138B
AUM Growth
+$14.2B
Cap. Flow
-$5.38B
Cap. Flow %
-3.9%
Top 10 Hldgs %
8.28%
Holding
5,589
New
1,050
Increased
1,919
Reduced
1,756
Closed
572
Avg Time Held Equity + Options
1.4 years
Top 10 Avg Time Held Equity + Options
0.2 years
Top 20 Avg Time Held Equity + Options
0.2 years
Avg Time Held Equity only
1.7 years
Top 10 Avg Time Held Equity only
0.2 years
Top 20 Avg Time Held Equity only
0.2 years

Top Buys

Rank Stock Value
1
INTU icon
Intuit
INTU
+$753M
2
BSX icon
Boston Scientific
BSX
+$540M
3
DOW icon
Dow Inc
DOW
+$485M
4
WFC icon
Wells Fargo
WFC
+$457M
5
GS icon
Goldman Sachs
GS
+$378M

Top Sells

Rank Stock Value
1
MU icon
Micron Technology
MU
+$1.32B
2
NVDA icon
NVIDIA
NVDA
+$1.02B
3
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$787M
4
SNDK icon
Sandisk
SNDK
+$744M
5
DELL icon
Dell
DELL
+$688M

Sector Composition

Rank Sector Weight
1 Technology 19.7%
2 Financials 15.22%
3 Miscellaneous 12.05%
4 Healthcare 11.94%
5 Industrials 11.56%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow Held Since
IGPT icon
5151
Invesco AI and Next Gen Software ETF
IGPT
$1.3B
– –
-5,100
Closed -$296K –
IGV icon
5152
iShares Expanded Tech-Software Sector ETF
IGV
$13.9B
– –
-89,300
Closed -$7.15M –
ILCG icon
5153
iShares Morningstar Growth ETF
ILCG
$3.09B
– –
-106,700
Closed -$10.2M –
IMUX icon
5154
Immunic
IMUX
$95.1M
– –
-6,719
Closed -$74.6K –
INSP icon
5155
Inspire Medical Systems
INSP
$1.99B
– –
-85,096
Closed -$4.39M –
INTZ icon
5156
Intrusion
INTZ
$15.4M
– –
-13,483
Closed -$11.1K –
IOT icon
5157
PUT
Samsara
IOT
$23.2B
– –
-11,000
Closed -$349K –
IPI icon
5158
Intrepid Potash
IPI
$435M
– –
-8,641
Closed -$370K –
IRTC icon
5159
iRhythm Holdings
IRTC
$3.58B
– –
-52,600
Closed -$6.21M –
IA icon
5160
Innovative Solutions & Support
IA
$346M
– –
-25,858
Closed -$531K –
ITA icon
5161
iShares US Aerospace & Defense ETF
ITA
$12.2B
– –
-36,900
Closed -$8.07M –
IWL icon
5162
iShares Russell Top 200 ETF
IWL
$2.24B
– –
-64,000
Closed -$10.3M –
IWM icon
5163
iShares Russell 2000 ETF
IWM
$76.2B
– –
-251,870
Closed -$70.8M –
IXN icon
5164
iShares Global Tech ETF
IXN
$9.05B
– –
-177,600
Closed -$17.8M –
IYH icon
5165
iShares US Healthcare ETF
IYH
$4.17B
– –
-115,987
Closed -$7.15M –
IYR icon
5166
iShares US Real Estate ETF
IYR
$4.18B
– –
-984,203
Closed -$93.1M –
JAKK icon
5167
Jakks Pacific
JAKK
$327M
– –
-14,635
Closed -$292K –
JBL icon
5168
CALL
Jabil
JBL
$29.2B
– –
-1,700
Closed -$452K –
JBL icon
5169
PUT
Jabil
JBL
$29.2B
– –
-3,300
Closed -$877K –
JCI icon
5170
CALL
Johnson Controls International
JCI
$88.1B
– –
-12,200
Closed -$1.6M –
JCI icon
5171
PUT
Johnson Controls International
JCI
$88.1B
– –
-8,500
Closed -$1.11M –
JGRO icon
5172
JPMorgan Active Growth ETF
JGRO
$9.7B
– –
-28,900
Closed -$2.44M –
JILL icon
5173
J. Jill
JILL
$365M
– –
-12,651
Closed -$145K –
JOBY icon
5174
CALL
Joby Aviation
JOBY
$4.64B
– –
-26,400
Closed -$218K –
JOBY icon
5175
PUT
Joby Aviation
JOBY
$4.64B
– –
-16,800
Closed -$139K –
205 206
207
208 209

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John Overdeck's Q2 2026 Portfolio in Review

As of Q2 2026, John Overdeck held 5,589 positions worth $138B, up 11% from $124B the previous quarter. Its ten largest holdings account for 8.3% of the portfolio.

John Overdeck withdrew a net $5.38B in Q2 2026, closing 572 positions and reducing 1,756 holdings. Its most notable exit was State Street Technology Select Sector SPDR ETF, an estimated $172M position sold in full.

By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 19% a quarter earlier, followed by Financials and Miscellaneous.

Against the trend, John Overdeck opened a new position in Intuit worth $564M.

  • John Overdeck's largest Q2 2026 buy was Intuit: 2,161,507 shares worth $564M.
  • John Overdeck added most to Boston Scientific in Q2 2026, an estimated $540M increase.
  • John Overdeck's biggest Q2 2026 reduction was Micron Technology, cutting an estimated $1.32B.
  • John Overdeck fully exited State Street Technology Select Sector SPDR ETF in Q2 2026, selling an estimated $172M.
  • John Overdeck's ten largest holdings make up 8.3% of its $138B portfolio in Q2 2026.
  • John Overdeck opened 1,050 new positions and closed 572 in Q2 2026.
  • John Overdeck's portfolio value rose 11% quarter-over-quarter to $138B.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.