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 | |
|---|---|---|---|---|---|---|
2576
TransAlta
TAC
$3.83B
| $424K | ﹤0.01% |
39,316
-267,426
| -87% | -$2.55M |
|
2577
Consolidated Water Co
CWCO
$479M
| $424K | ﹤0.01% |
14,127
+5,010
| +55% | +$130K |
|
2578
Strategas Macro Thematic Opportunities ETF
SAMT
$876M
| $423K | ﹤0.01% |
+12,300
| New | +$382K |
|
2579
Schwab US Broad Market ETF
SCHB
$44.4B
| $422K | ﹤0.01% |
17,700
+2,000
| +13% | +$44.1K |
|
|
TSE
2580
DELISTED
Trinseo
TSE
| $422K | ﹤0.01% |
135,135
-165,172
| -55% | -$544K |
|
2581
Casella Waste Systems
CWST
$6.03B
| $419K | ﹤0.01% |
3,631
-1,169
| -24% | -$135K |
|
2582
Melco Resorts & Entertainment
MLCO
$2.08B
| $418K | ﹤0.01% |
57,879
-669,255
| -92% | -$3.89M |
|
2583
ACNB Corp
ACNB
$655M
| $417K | ﹤0.01% |
9,741
-3,542
| -27% | -$147K |
|
|
KGEI
2584
Kolibri Global Energy
KGEI
$215M
| $417K | ﹤0.01% |
+60,909
| New | +$419K |
|
2585
Genesco
GCO
$390M
| $417K | ﹤0.01% |
21,160
-3,852
| -15% | -$80.6K |
|
2586
Napco Security Technologies
NSSC
$1.34B
| $417K | ﹤0.01% |
+14,031
| New | +$361K |
|
2587
WSFS Financial
WSFS
$4.06B
| $416K | ﹤0.01% |
+7,566
| New | +$393K |
|
2588
W.W. Grainger
GWW
$62.3B
| $416K | ﹤0.01% |
400
-720
| -64% | -$748K |
|
2589
HUTCHMED
HCM
$2.12B
| $416K | ﹤0.01% |
27,641
-19,621
| -42% | -$287K |
|
2590
Pinnacle Financial Partners Inc
PNFP
$15.3B
| $414K | ﹤0.01% |
+3,747
| New | +$387K |
|
2591
Park National Corp
PRK
$3.68B
| $411K | ﹤0.01% |
2,458
-13,219
| -84% | -$2.08M |
|
|
SHYF
2592
DELISTED
The Shyft Group
SHYF
| $407K | ﹤0.01% |
32,470
-88,924
| -73% | -$871K |
|
2593
Fulcrum Therapeutics
FULC
$293M
| $406K | ﹤0.01% |
58,965
-91,309
| -61% | -$488K |
|
|
PMT
2594
PennyMac Mortgage Investment
PMT
$810M
| $404K | ﹤0.01% |
31,425
-81,432
| -72% | -$1.04M |
|
2595
MetroCity Bankshares
MCBS
$1.02B
| $403K | ﹤0.01% |
14,112
-2,791
| -17% | -$77.4K |
|
2596
OmniAb
OABI
$685M
| $403K | ﹤0.01% |
+231,688
| New | +$388K |
|
2597
Clearfield
CLFD
$370M
| $402K | ﹤0.01% |
9,261
+1,276
| +16% | +$43.7K |
|
|
CVAC
2598
DELISTED
CureVac
CVAC
| $400K | ﹤0.01% |
73,632
-138
| -0.2% | -$547 |
|
2599
Intellicheck
IDN
$58.6M
| $399K | ﹤0.01% |
+74,038
| New | +$283K |
|
2600
Microvision
MVIS
$52M
| $399K | ﹤0.01% |
23,309
+7,098
| +44% | +$123K |
|
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.