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 | |
|---|---|---|---|---|---|---|
2726
Buckle
BKE
$2.29B
| $290K | ﹤0.01% |
6,390
-62,101
| -91% | -$2.46M |
|
|
TMQ
2727
Trilogy Metals
TMQ
$650M
| $290K | ﹤0.01% |
214,594
+9,755
| +5% | +$13.7K |
|
2728
Gates Industrial Corp
GTES
$6.59B
| $289K | ﹤0.01% |
12,541
-380,683
| -97% | -$7.67M |
|
2729
Lineage Cell Therapeutics
LCTX
$276M
| $289K | ﹤0.01% |
317,977
-162,446
| -34% | -$96.4K |
|
|
CIO
2730
DELISTED
City Office REIT
CIO
| $286K | ﹤0.01% |
53,515
-43,481
| -45% | -$218K |
|
|
CEPU
2731
Central Puerto
CEPU
$2B
| $285K | ﹤0.01% |
24,400
-13,764
| -36% | -$162K |
|
2732
Hycroft Mining Holding Corp
HYMC
$2.4B
| $283K | ﹤0.01% |
90,368
+50,703
| +128% | +$166K |
|
2733
Monro
MNRO
$402M
| $283K | ﹤0.01% |
+18,959
| New | +$273K |
|
2734
ETC 6 Meridian Small Cap Equity ETF
SIXS
$146M
| $280K | ﹤0.01% |
6,000
-400
| -6% | -$18.3K |
|
2735
Spire Global
SPIR
$563M
| $280K | ﹤0.01% |
23,523
+5,822
| +33% | +$58.7K |
|
2736
Simply Good Foods
SMPL
$970M
| $280K | ﹤0.01% |
8,860
+1,236
| +16% | +$43K |
|
|
ASRT
2737
DELISTED
Assertio
ASRT
| $279K | ﹤0.01% |
29,025
-15,606
| -35% | -$150K |
|
2738
SBA Communications
SBAC
$19.6B
| $279K | ﹤0.01% |
1,186
-24,912
| -95% | -$5.7M |
|
2739
Lexeo Therapeutics
LXEO
$404M
| $278K | ﹤0.01% |
69,242
+32,618
| +89% | +$107K |
|
2740
M-tron Industries
MPTI
$344M
| $278K | ﹤0.01% |
+6,615
| New | +$319K |
|
|
SRG
2741
Seritage Growth Properties
SRG
$119M
| $278K | ﹤0.01% |
90,163
-32,811
| -27% | -$94.5K |
|
2742
CarParts.com
PRTS
$50.5M
| $276K | ﹤0.01% |
37,342
+18,803
| +101% | +$161K |
|
2743
Viant Technology
DSP
$259M
| $276K | ﹤0.01% |
20,833
-31,017
| -60% | -$425K |
|
2744
iShares Morningstar Value ETF
ILCV
$1.36B
| $275K | ﹤0.01% |
+3,300
| New | +$263K |
|
2745
Vor Biopharma
VOR
$1.34B
| $275K | ﹤0.01% |
8,482
+2,332
| +38% | +$20.6K |
|
|
NBP
2746
NovaBridge Biosciences American Depositary Shares
NBP
$219M
| $274K | ﹤0.01% |
113,262
-97,104
| -46% | -$132K |
|
2747
Praxis Precision Medicines
PRAX
$10.3B
| $274K | ﹤0.01% |
6,509
-12,299
| -65% | -$468K |
|
2748
Texas Capital Bancshares
TCBI
$4.26B
| $272K | ﹤0.01% |
+3,431
| New | +$246K |
|
|
NREF
2749
NexPoint Real Estate Finance
NREF
$332M
| $272K | ﹤0.01% |
19,735
-5,212
| -21% | -$74.7K |
|
|
SLDE
2750
Slide Insurance Holdings
SLDE
$2.76B
| $271K | ﹤0.01% |
+12,500
| New | +$269K |
|
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.