IMC Chicago Portfolio holdings
IMC-Chicago, a key arm of IMC Trading founded in 1989 by Rob Defares and René Schelvis in Amsterdam, is a proprietary trading firm and market maker headquartered in Chicago since opening its first overseas office there in 2000. Employing over 650 of IMC’s 1,600+ global workforce, it operates at the heart of North America’s financial hub, trading equities, options, futures, and other derivatives on major exchanges like the Chicago Mercantile Exchange (CME) and Chicago Board Options Exchange (CBOE). Known for its technology-driven approach, IMC-Chicago leverages advanced algorithms and low-latency systems to provide liquidity across more than 100 global venues, evolving from a trading outfit with strong tech to a tech company that trades. Under CEO Rob Defares, the firm emphasizes innovation, quantitative strategies, and a collaborative culture, making it a powerhouse in the U.S. derivatives market.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Sprott Physical Silver Trust
PSLV
|
+$344M |
| 2 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$297M |
| 3 |
Tesla
TSLA
|
+$235M |
| 4 |
Sprott Physical Gold and Silver Trust
CEF
|
+$177M |
| 5 |
Meta Platforms (Facebook)
META
|
+$120M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$426M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$390M |
| 3 |
NVIDIA
NVDA
|
+$72.8M |
| 4 |
Broadcom
AVGO
|
+$66.7M |
| 5 |
AST SpaceMobile
ASTS
|
+$62.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.58% |
| 2 | Consumer Discretionary | 0.39% |
| 3 | Financials | 0.16% |
| 4 | Communication Services | 0.13% |
| 5 | Industrials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3101
Klaviyo
KVYO
$5.43B
| $1.18M | ﹤0.01% |
+60,809
| New | +$1.3M |
|
3102
PUT
Magnite
MGNI
$2.72B
| $1.18M | ﹤0.01% |
99,600
-25,600
| -20% | -$343K |
|
3103
ProShares UltraShort Real Estate
SRS
$15.2M
| $1.18M | ﹤0.01% |
24,782
+8,562
| +53% | +$394K |
|
|
BTC
3104
Grayscale Bitcoin Mini Trust ETF
BTC
$3.45B
| $1.18M | ﹤0.01% |
+39,392
| New | +$1.33M |
|
3105
PUT
Lightbridge
LTBR
$245M
| $1.18M | ﹤0.01% |
110,800
+36,600
| +49% | +$508K |
|
|
VNET
3106
CALL
VNET Group
VNET
$2.18B
| $1.18M | ﹤0.01% |
140,700
+26,100
| +23% | +$277K |
|
3107
CALL
Star Bulk Carriers
SBLK
$2.91B
| $1.18M | ﹤0.01% |
51,300
+32,300
| +170% | +$735K |
|
3108
PUT
Helen of Troy
HELE
$652M
| $1.18M | ﹤0.01% |
81,700
+1,700
| +2% | +$29.7K |
|
3109
CALL
BRC Group Holdings
RILY
$276M
| $1.18M | ﹤0.01% |
160,900
+65,200
| +68% | +$486K |
|
3110
Martin Marietta Materials
MLM
$33.2B
| $1.18M | ﹤0.01% |
+2,000
| New | +$1.28M |
|
3111
PUT
Vanguard Value ETF
VTV
$185B
| $1.18M | ﹤0.01% |
+6,000
| New | +$1.2M |
|
3112
Nektar Therapeutics
NKTR
$2.19B
| $1.18M | ﹤0.01% |
+16,361
| New | +$932K |
|
3113
PUT
Gold Fields
GFI
$28B
| $1.18M | ﹤0.01% |
25,900
-23,100
| -47% | -$1.16M |
|
|
SW
3114
CALL
Smurfit Westrock
SW
$22.6B
| $1.18M | ﹤0.01% |
29,500
+16,700
| +130% | +$720K |
|
3115
PUT
Bowman Consulting
BWMN
$455M
| $1.17M | ﹤0.01% |
+41,200
| New | +$1.34M |
|
|
FPS
3116
CALL
Forgent Power Solutions
FPS
$10B
| $1.17M | ﹤0.01% |
+40,000
| New | +$1.33M |
|
3117
PUT
Cogent Communications
CCOI
$621M
| $1.17M | ﹤0.01% |
62,000
+29,700
| +92% | +$654K |
|
3118
Celcuity
CELC
$4.29B
| $1.17M | ﹤0.01% |
+10,232
| New | +$1.12M |
|
3119
SharkNinja
SN
$21.6B
| $1.17M | ﹤0.01% |
+11,027
| New | +$1.29M |
|
3120
PUT
FLEX LNG
FLNG
$1.65B
| $1.17M | ﹤0.01% |
39,300
+26,900
| +217% | +$744K |
|
3121
PUT
Doximity
DOCS
$3.91B
| $1.17M | ﹤0.01% |
50,100
-2,400
| -5% | -$74.8K |
|
3122
CALL
Bit Digital
BTBT
$544M
| $1.17M | ﹤0.01% |
891,000
+117,000
| +15% | +$215K |
|
3123
PUT
Crown Holdings
CCK
$12.8B
| $1.16M | ﹤0.01% |
11,600
-388,800
| -97% | -$41.5M |
|
3124
PUT
Vanguard Global ex-US Real Estate ETF
VNQI
$3.47B
| $1.16M | ﹤0.01% |
21,500
-3,700
| -15% | -$176K |
|
3125
Anterix
ATEX
$1.99B
| $1.16M | ﹤0.01% |
30,363
+16,986
| +127% | +$538K |
|
Similar funds
IMC Chicago's Q1 2026 Portfolio in Review
As of Q1 2026, IMC Chicago held 6,062 positions worth $278B, up 1.1% from $275B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
IMC Chicago deployed $22.2B of net new capital in Q1 2026, opening 2,049 new positions and adding to 1,848 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 436,397 shares worth $284M.
By sector, the portfolio is most concentrated in Technology at 0.58% of assets, up from 0.56% a quarter earlier, followed by Consumer Discretionary and Financials.
On the sell side, the largest reduction was Broadcom, an estimated $66.7M trimmed.
- IMC Chicago's largest Q1 2026 buy was State Street SPDR S&P 500 ETF Trust: 436,397 shares worth $284M.
- IMC Chicago added most to Sprott Physical Silver Trust in Q1 2026, an estimated $344M increase.
- IMC Chicago's biggest Q1 2026 reduction was Broadcom, cutting an estimated $66.7M.
- IMC Chicago fully exited Invesco QQQ Trust in Q1 2026, selling an estimated $426M.
- IMC Chicago's ten largest holdings make up 38% of its $278B portfolio in Q1 2026.
- IMC Chicago opened 2,049 new positions and closed 389 in Q1 2026.
- IMC Chicago's portfolio value rose 1.1% quarter-over-quarter to $278B.
Based on IMC Chicago's 13F filing for Q1 2026, filed 5 May 2026.