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 | |
|---|---|---|---|---|---|---|
3151
CALL
Jones Lang LaSalle
JLL
$15.1B
| $1.13M | ﹤0.01% |
+3,700
| New | +$1.2M |
|
|
LB
3152
PUT
LandBridge Co
LB
$2.12B
| $1.13M | ﹤0.01% |
16,300
+2,800
| +21% | +$178K |
|
3153
PUT
uniQure
QURE
$2.75B
| $1.12M | ﹤0.01% |
68,700
-38,200
| -36% | -$773K |
|
3154
PUT
Arch Capital
ACGL
$35.1B
| $1.12M | ﹤0.01% |
11,700
-7,700
| -40% | -$737K |
|
|
KLAR
3155
Klarna Group
KLAR
$7.19B
| $1.12M | ﹤0.01% |
+85,750
| New | +$1.7M |
|
3156
CALL
Service Corp International
SCI
$10.7B
| $1.12M | ﹤0.01% |
+13,600
| New | +$1.1M |
|
3157
PUT
Camtek
CAMT
$7.37B
| $1.12M | ﹤0.01% |
+7,400
| New | +$1.12M |
|
|
HTGCR
3158
CALL
DELISTED
HERCULES TECHNOLOGY GROWTH CAP INC TRANS RGTS TO PUR COM STK
HTGCR
| $1.12M | ﹤0.01% |
75,900
-1,000
| -1% | -$14.8K |
|
3159
CALL
Robert Half
RHI
$4.19B
| $1.12M | ﹤0.01% |
44,100
+27,800
| +171% | +$735K |
|
3160
PUT
HDFC Bank
HDB
$122B
| $1.12M | ﹤0.01% |
45,000
+28,400
| +171% | +$883K |
|
3161
PUT
Genesco
GCO
$404M
| $1.12M | ﹤0.01% |
+38,500
| New | +$1.11M |
|
3162
CALL
Pentair
PNR
$9.92B
| $1.12M | ﹤0.01% |
+12,800
| New | +$1.25M |
|
3163
CALL
Organon & Co
OGN
$3.55B
| $1.11M | ﹤0.01% |
186,100
-60,100
| -24% | -$452K |
|
3164
Nutanix
NTNX
$14.5B
| $1.11M | ﹤0.01% |
29,296
-40,833
| -58% | -$1.72M |
|
3165
CALL
Paylocity
PCTY
$6.6B
| $1.11M | ﹤0.01% |
+10,300
| New | +$1.26M |
|
3166
PUT
Vanguard World Funds Extended Duration ETF
EDV
$3.32B
| $1.11M | ﹤0.01% |
17,100
-3,700
| -18% | -$245K |
|
3167
PUT
Inspire Medical Systems
INSP
$1.51B
| $1.11M | ﹤0.01% |
21,500
-14,200
| -40% | -$994K |
|
3168
PUT
Array Technologies
ARRY
$941M
| $1.11M | ﹤0.01% |
153,300
+27,900
| +22% | +$258K |
|
3169
CALL
Main Street Capital
MAIN
$5.1B
| $1.11M | ﹤0.01% |
20,900
+2,700
| +15% | +$160K |
|
3170
CALL
Pampa Energía
PAM
$4.65B
| $1.11M | ﹤0.01% |
+12,500
| New | +$1.04M |
|
3171
PUT
Procore
PCOR
$6.68B
| $1.11M | ﹤0.01% |
19,400
+8,300
| +75% | +$491K |
|
3172
CALL
Global Ship Lease
GSL
$1.51B
| $1.11M | ﹤0.01% |
29,700
+10,600
| +55% | +$399K |
|
3173
CALL
Broadridge
BR
$16.8B
| $1.1M | ﹤0.01% |
+6,800
| New | +$1.29M |
|
3174
CALL
Corcept Therapeutics
CORT
$10.1B
| $1.1M | ﹤0.01% |
27,400
+3,200
| +13% | +$120K |
|
|
PR
3175
PUT
Permian Resources
PR
$17.4B
| $1.1M | ﹤0.01% |
51,800
-11,000
| -18% | -$190K |
|
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.