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 |
iShares Expanded Tech-Software Sector ETF
IGV
|
+$312M |
| 2 |
UnitedHealth
UNH
|
+$286M |
| 3 |
Duolingo
DUOL
|
+$247M |
| 4 |
Aon
AON
|
+$226M |
| 5 |
Chubb
CB
|
+$221M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$338M |
| 2 |
Marvell Technology
MRVL
|
+$241M |
| 3 |
Advanced Micro Devices
AMD
|
+$240M |
| 4 |
ServiceNow
NOW
|
+$203M |
| 5 |
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 | |
|---|---|---|---|---|---|---|
1051
Reynolds Consumer Products
REYN
$5.33B
| $6.17M | 0.01% |
287,889
+278,230
| +2,881% | +$6.3M |
|
1052
Willdan Group
WLDN
$1.27B
| $6.16M | 0.01% |
98,468
+39,744
| +68% | +$1.9M |
|
1053
LifeMD
LFMD
$151M
| $6.14M | 0.01% |
450,527
+420,127
| +1,382% | +$3.97M |
|
|
AL
1054
DELISTED
Air Lease Corp
AL
| $6.11M | 0.01% |
+104,513
| New | +$5.44M |
|
|
HAPN
1055
Happen Inc
HAPN
$2.11B
| $6.08M | 0.01% |
505,704
-2,551
| -0.5% | -$26.5K |
|
1056
UGI
UGI
$8.19B
| $6.08M | 0.01% |
167,007
+31,637
| +23% | +$1.09M |
|
|
VBTX
1057
DELISTED
Veritex Holdings
VBTX
| $6.08M | 0.01% |
232,807
+56,728
| +32% | +$1.35M |
|
1058
Byline Bancorp
BY
$1.73B
| $6.03M | 0.01% |
225,687
+135,641
| +151% | +$3.48M |
|
1059
Runway Growth Finance
RWAY
$275M
| $6.03M | 0.01% |
562,056
+27,678
| +5% | +$268K |
|
1060
RingCentral
RNG
$5.6B
| $6.03M | 0.01% |
212,678
-364,546
| -63% | -$9.4M |
|
1061
Nuveen Churchill Direct Lending
NCDL
$608M
| $6.02M | 0.01% |
372,103
-63,338
| -15% | -$1M |
|
1062
Microvast
MVST
$298M
| $5.99M | 0.01% |
1,648,872
+1,537,396
| +1,379% | +$4.5M |
|
1063
Amprius Technologies
AMPX
$1.44B
| $5.94M | 0.01% |
1,411,608
+1,000,130
| +243% | +$2.81M |
|
1064
Invesco S&P MidCap Momentum ETF
XMMO
$7.31B
| $5.94M | 0.01% |
+46,200
| New | +$5.52M |
|
1065
Walker & Dunlop
WD
$1.36B
| $5.92M | 0.01% |
83,993
+77,221
| +1,140% | +$5.58M |
|
1066
Recursion Pharmaceuticals
RXRX
$1.74B
| $5.91M | 0.01% |
1,167,813
+15,187
| +1% | +$74.6K |
|
1067
Cheesecake Factory
CAKE
$5.7B
| $5.86M | 0.01% |
93,513
-46,320
| -33% | -$2.46M |
|
1068
Amplitude
AMPL
$1.64B
| $5.86M | 0.01% |
+472,278
| New | +$5.11M |
|
1069
Turkcell
TKC
$4.72B
| $5.85M | 0.01% |
966,517
+888,730
| +1,143% | +$5.4M |
|
|
TSSI
1070
TSS Inc
TSSI
$236M
| $5.82M | 0.01% |
+201,869
| New | +$2.65M |
|
1071
Fidus Investment
FDUS
$752M
| $5.82M | 0.01% |
287,879
-111,120
| -28% | -$2.17M |
|
1072
Sonoco
SON
$5.68B
| $5.81M | 0.01% |
133,284
+99,659
| +296% | +$4.46M |
|
1073
KLA
KLAC
$237B
| $5.77M | 0.01% |
64,380
-304,320
| -83% | -$22.9M |
|
|
BRKL
1074
DELISTED
Brookline Bancorp
BRKL
| $5.77M | 0.01% |
546,542
+21,807
| +4% | +$226K |
|
1075
Schwab US Large- Cap ETF
SCHX
$73.8B
| $5.76M | 0.01% |
235,736
+204,800
| +662% | +$4.63M |
|
Similar funds
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.