John Overdeck Two Sigma Investments
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.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$474M |
| 2 |
State Street Consumer Staples Select Sector SPDR ETF
XLP
|
+$357M |
| 3 |
Accenture
ACN
|
+$246M |
| 4 |
Advanced Micro Devices
AMD
|
+$235M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$231M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$381M |
| 2 |
State Street Technology Select Sector SPDR ETF
XLK
|
+$375M |
| 3 |
iShares Expanded Tech-Software Sector ETF
IGV
|
+$348M |
| 4 |
Thermo Fisher Scientific
TMO
|
+$292M |
| 5 |
Snowflake
SNOW
|
+$258M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 16.18% |
| 2 | Financials | 15.54% |
| 3 | Industrials | 10.5% |
| 4 | Healthcare | 9.8% |
| 5 | Consumer Discretionary | 8.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1951
Northwest Bancshares
NWBI
$2.24B
| $2.32M | ﹤0.01% |
187,209
-135,105
| -42% | -$1.7M |
|
1952
Cisco
CSCO
$438B
| $2.32M | ﹤0.01% |
33,900
-329,367
| -91% | -$22.5M |
|
1953
Lindsay Corp
LNN
$1.16B
| $2.32M | ﹤0.01% |
16,470
+13,238
| +410% | +$1.84M |
|
|
SMA
1954
SmartStop Self Storage REIT
SMA
$1.88B
| $2.31M | ﹤0.01% |
61,467
-75,537
| -55% | -$2.75M |
|
1955
Luxfer Holdings
LXFR
$459M
| $2.31M | ﹤0.01% |
165,877
+68,947
| +71% | +$886K |
|
1956
Emergent Biosolutions
EBS
$289M
| $2.3M | ﹤0.01% |
261,331
-92,338
| -26% | -$718K |
|
|
OGG
1957
Osisko Gold Group
OGG
$976M
| $2.3M | ﹤0.01% |
+679,791
| New | +$1.8M |
|
1958
Putnam Focused Large Cap Value ETF
PVAL
$14.1B
| $2.3M | ﹤0.01% |
53,900
-411,500
| -88% | -$17M |
|
1959
First Trust NASDAQ ABA Community Bank Index Fund
QABA
$91.3M
| $2.3M | ﹤0.01% |
41,000
+7,700
| +23% | +$437K |
|
|
IBAC
1960
IB Acquisition Corp
IBAC
$54.5M
| $2.3M | ﹤0.01% |
218,750
| – | – |
|
1961
Hafnia
HAFN
$4.09B
| $2.29M | ﹤0.01% |
381,659
-400
| -0.1% | -$2.29K |
|
|
EMX
1962
DELISTED
EMX Royalty
EMX
| $2.29M | ﹤0.01% |
+443,704
| New | +$1.54M |
|
1963
PUT
Shake Shack
SHAK
$2.99B
| $2.28M | ﹤0.01% |
24,400
| – | – |
|
1964
Johnson Outdoors
JOUT
$479M
| $2.27M | ﹤0.01% |
56,159
+45,552
| +429% | +$1.7M |
|
1965
Kodiak Sciences
KOD
$2.48B
| $2.26M | ﹤0.01% |
138,261
+84,864
| +159% | +$731K |
|
1966
Ooma
OOMA
$566M
| $2.26M | ﹤0.01% |
188,635
+152,328
| +420% | +$1.86M |
|
1967
Quanex
NX
$916M
| $2.26M | ﹤0.01% |
158,604
+138,156
| +676% | +$2.58M |
|
|
GOLD
1968
Gold.com Inc
GOLD
$1.36B
| $2.25M | ﹤0.01% |
87,127
+5,357
| +7% | +$127K |
|
|
QUMSU
1969
Quantumsphere Acquisition Corp Units
QUMSU
| $2.25M | ﹤0.01% |
+222,490
| New | +$2.24M |
|
1970
CION Investment
CION
$370M
| $2.25M | ﹤0.01% |
237,742
+6,489
| +3% | +$65.5K |
|
|
HSPT
1971
DELISTED
Horizon Space Acquisition II Corp
HSPT
| $2.25M | ﹤0.01% |
217,499
| – | – |
|
|
MREO
1972
Mereo BioPharma
MREO
$45M
| $2.24M | ﹤0.01% |
1,088,096
+428,938
| +65% | +$791K |
|
1973
Burke & Herbert Financial Services Corp
BHRB
$1.45B
| $2.24M | ﹤0.01% |
36,305
+11,826
| +48% | +$732K |
|
1974
Trinity Industries
TRN
$2.36B
| $2.24M | ﹤0.01% |
79,782
+15,917
| +25% | +$439K |
|
1975
Stoneridge
SRI
$205M
| $2.24M | ﹤0.01% |
293,488
+31,661
| +12% | +$251K |
|
Similar funds
John Overdeck's Q3 2025 Portfolio in Review
As of Q3 2025, John Overdeck held 4,027 positions worth $67.2B, up 19% from $56.5B the previous quarter. Its ten largest holdings account for 6.2% of the portfolio.
John Overdeck deployed $4.46B of net new capital in Q3 2025, opening 877 new positions and adding to 1,461 existing holdings. Its largest new stake was Berkshire Hathaway Class B: 379,096 shares worth $191M.
By sector, the portfolio is most concentrated in Technology at 16% of assets, down from 17% a quarter earlier, followed by Financials and Industrials.
On the sell side, the largest reduction was Invesco QQQ Trust, an estimated $381M trimmed.
- John Overdeck's largest Q3 2025 buy was Berkshire Hathaway Class B: 379,096 shares worth $191M.
- John Overdeck added most to State Street Financial Select Sector SPDR ETF in Q3 2025, an estimated $474M increase.
- John Overdeck's biggest Q3 2025 reduction was Invesco QQQ Trust, cutting an estimated $381M.
- John Overdeck fully exited NextEra Energy, Inc. 6.926% Corporate Units in Q3 2025, selling an estimated $115M.
- John Overdeck's ten largest holdings make up 6.2% of its $67.2B portfolio in Q3 2025.
- John Overdeck opened 877 new positions and closed 399 in Q3 2025.
- John Overdeck's portfolio value rose 19% quarter-over-quarter to $67.2B.
Based on Two Sigma Investments's 13F filing for Q3 2025, filed 14 Nov 2025.