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 |
iShares Bitcoin Trust
IBIT
|
+$232M |
| 2 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$168M |
| 3 |
Apple
AAPL
|
+$149M |
| 4 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$136M |
| 5 |
UnitedHealth
UNH
|
+$110M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$153M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$127M |
| 3 |
Advanced Micro Devices
AMD
|
+$97.1M |
| 4 |
TSMC
TSM
|
+$65.3M |
| 5 |
SPYM
State Street SPDR Portfolio S&P 500 ETF
SPYM
|
+$57.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.32% |
| 2 | Consumer Discretionary | 0.25% |
| 3 | Healthcare | 0.13% |
| 4 | Communication Services | 0.1% |
| 5 | Financials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2851
ProShares UltraShort Russell2000
TWM
$40.8M
| $513K | ﹤0.01% |
11,868
-24,490
| -67% | -$1.25M |
|
|
CFLT
2852
DELISTED
Confluent
CFLT
| $513K | ﹤0.01% |
20,571
+10,064
| +96% | +$227K |
|
2853
CALL
Iridium Communications
IRDM
$5.27B
| $510K | ﹤0.01% |
+16,900
| New | +$439K |
|
2854
PUT
Lazard
LAZ
$4.43B
| $509K | ﹤0.01% |
+10,600
| New | +$443K |
|
2855
Western Union
WU
$2.34B
| $508K | ﹤0.01% |
+60,298
| New | +$573K |
|
2856
PUT
Braze
BRZE
$3.36B
| $506K | ﹤0.01% |
18,000
-100
| -0.6% | -$3.16K |
|
|
CNH
2857
PUT
CNH Industrial
CNH
$16.7B
| $505K | ﹤0.01% |
39,000
-1,300
| -3% | -$16.1K |
|
2858
GraniteShares 2x Short TSLA Daily ETF
TSDD
$26.3M
| $505K | ﹤0.01% |
+22,070
| New | +$721K |
|
2859
PUT
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$5.44B
| $505K | ﹤0.01% |
18,800
+5,700
| +44% | +$148K |
|
|
LAC
2860
PUT
Lithium Americas
LAC
$1.24B
| $505K | ﹤0.01% |
188,400
-86,000
| -31% | -$238K |
|
2861
The Honest Company
HNST
$540M
| $503K | ﹤0.01% |
98,875
+50,548
| +105% | +$242K |
|
|
HAPN
2862
PUT
Happen Inc
HAPN
$2.27B
| $503K | ﹤0.01% |
41,800
+4,200
| +11% | +$43.6K |
|
2863
ADMA Biologics
ADMA
$2.11B
| $503K | ﹤0.01% |
+27,606
| New | +$563K |
|
2864
PUT
Sonos
SONO
$1.96B
| $503K | ﹤0.01% |
46,500
+18,600
| +67% | +$181K |
|
2865
Viatris
VTRS
$18.4B
| $503K | ﹤0.01% |
56,274
+29,561
| +111% | +$250K |
|
2866
PUT
BlackSky Technology
BKSY
$1.27B
| $502K | ﹤0.01% |
+24,400
| New | +$263K |
|
2867
CALL
Birkenstock
BIRK
$7.54B
| $502K | ﹤0.01% |
10,200
-4,800
| -32% | -$247K |
|
2868
CALL
Wolfspeed
WOLF
$1.64B
| $498K | ﹤0.01% |
1,247,700
-148,400
| -11% | -$338K |
|
|
NNDM
2869
CALL
Nano Dimension
NNDM
$348M
| $497K | ﹤0.01% |
307,000
+19,500
| +7% | +$29.8K |
|
2870
CALL
The RealReal
REAL
$1.33B
| $496K | ﹤0.01% |
103,600
+58,400
| +129% | +$321K |
|
|
FETH
2871
PUT
Fidelity Ethereum Fund
FETH
$1.02B
| $496K | ﹤0.01% |
+19,700
| New | +$432K |
|
2872
CALL
Teradata
TDC
$2.57B
| $495K | ﹤0.01% |
22,200
-10,700
| -33% | -$233K |
|
|
HBI
2873
PUT
DELISTED
Hanesbrands
HBI
| $495K | ﹤0.01% |
108,000
-26,100
| -19% | -$126K |
|
2874
CALL
The Greenbrier Companies
GBX
$1.42B
| $493K | ﹤0.01% |
+10,700
| New | +$479K |
|
2875
CALL
IAMGOLD
IAG
$10.1B
| $492K | ﹤0.01% |
66,900
-14,100
| -17% | -$98.8K |
|
Similar funds
IMC Chicago's Q2 2025 Portfolio in Review
As of Q2 2025, IMC Chicago held 3,685 positions worth $225B, up 27% from $177B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
IMC Chicago deployed $13.1B of net new capital in Q2 2025, opening 615 new positions and adding to 1,602 existing holdings. Its largest new stake was iShares Bitcoin Trust: 4,132,010 shares worth $253M.
By sector, the portfolio is most concentrated in Technology at 0.32% of assets, up from 0.28% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Invesco QQQ Trust, an estimated $153M trimmed.
- IMC Chicago's largest Q2 2025 buy was iShares Bitcoin Trust: 4,132,010 shares worth $253M.
- IMC Chicago added most to Sprott Physical Gold in Q2 2025, an estimated $77.8M increase.
- IMC Chicago's biggest Q2 2025 reduction was Invesco QQQ Trust, cutting an estimated $153M.
- IMC Chicago fully exited Advanced Micro Devices in Q2 2025, selling an estimated $97.1M.
- IMC Chicago's ten largest holdings make up 42% of its $225B portfolio in Q2 2025.
- IMC Chicago opened 615 new positions and closed 423 in Q2 2025.
- IMC Chicago's portfolio value rose 27% quarter-over-quarter to $225B.
Based on IMC Chicago's 13F filing for Q2 2025, filed 22 Jul 2025.