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 Russell 2000 ETF
IWM
|
+$302M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$170M |
| 3 |
Broadcom
AVGO
|
+$164M |
| 4 |
Tesla
TSLA
|
+$158M |
| 5 |
Palantir
PLTR
|
+$109M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Bitcoin Trust
IBIT
|
+$167M |
| 2 |
Applovin
APP
|
+$126M |
| 3 |
JD.com
JD
|
+$103M |
| 4 |
Amazon
AMZN
|
+$97.8M |
| 5 |
Vanguard S&P 500 ETF
VOO
|
+$90.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.56% |
| 2 | Consumer Discretionary | 0.3% |
| 3 | Communication Services | 0.16% |
| 4 | Financials | 0.13% |
| 5 | Industrials | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2976
CALL
Blackstone Secured Lending
BXSL
$5.66B
| $995K | ﹤0.01% |
37,800
+20,400
| +117% | +$548K |
|
2977
PUT
PACS Group
PACS
$7.67B
| $994K | ﹤0.01% |
25,900
+11,000
| +74% | +$241K |
|
2978
CALL
FormFactor
FORM
$8.79B
| $993K | ﹤0.01% |
17,800
+5,800
| +48% | +$292K |
|
2979
CALL
LendingTree
TREE
$453M
| $993K | ﹤0.01% |
18,700
-20,600
| -52% | -$1.16M |
|
2980
CALL
Bakkt Inc
BKKT
$342M
| $991K | ﹤0.01% |
98,700
+20,000
| +25% | +$442K |
|
2981
PUT
Trupanion
TRUP
$1.27B
| $990K | ﹤0.01% |
26,500
+2,600
| +11% | +$102K |
|
2982
CALL
Altimmune
ALT
$593M
| $990K | ﹤0.01% |
274,100
-34,500
| -11% | -$150K |
|
2983
ProShares UltraShort Semiconductors
SSG
$38M
| $989K | ﹤0.01% |
+32,295
| New | +$1.05M |
|
|
2984
PUT
ProShares UltraShort Semiconductors
SSG
$38M
| $985K | ﹤0.01% |
+19,900
| New | +$647K |
|
2985
PUT
PagSeguro Digital
PAGS
$2.54B
| $984K | ﹤0.01% |
102,100
-18,500
| -15% | -$177K |
|
2986
CALL
Imperial Oil
IMO
$62.3B
| $984K | ﹤0.01% |
11,400
+200
| +2% | +$18.2K |
|
2987
PUT
James Hardie Industries
JHX
$17.7B
| $984K | ﹤0.01% |
+47,400
| New | +$951K |
|
|
QXO
2988
QXO Inc
QXO
$16.6B
| $982K | ﹤0.01% |
50,888
-4,522
| -8% | -$86.7K |
|
2989
Direxion Daily GOOGL Bear 1X ETF
GGLS
$15.6M
| $981K | ﹤0.01% |
14,476
-29
| -0.2% | -$2.2K |
|
2990
CALL
InMode
INMD
$873M
| $981K | ﹤0.01% |
66,800
-32,400
| -33% | -$477K |
|
2991
CALL
Masco
MAS
$14.7B
| $977K | ﹤0.01% |
+15,400
| New | +$999K |
|
2992
FT Vest US Equity Moderate Buffer ETF February
GFEB
$380M
| $974K | ﹤0.01% |
+23,462
| New | +$961K |
|
2993
CoreCivic
CXW
$3.26B
| $974K | ﹤0.01% |
50,968
+26,720
| +110% | +$490K |
|
2994
CALL
Trex
TREX
$4.91B
| $972K | ﹤0.01% |
27,700
+15,300
| +123% | +$619K |
|
2995
Fastly Inc
FSLY
$4.42B
| $972K | ﹤0.01% |
95,448
-125,773
| -57% | -$1.24M |
|
|
XXI
2996
CALL
Twenty One Capital Inc
XXI
$1.59B
| $971K | ﹤0.01% |
+110,800
| New | +$1.16M |
|
2997
Herbalife
HLF
$1.21B
| $970K | ﹤0.01% |
75,268
-23,074
| -23% | -$244K |
|
2998
CALL
Iridium Communications
IRDM
$5.23B
| $970K | ﹤0.01% |
55,800
-10,200
| -15% | -$180K |
|
|
VNET
2999
CALL
VNET Group
VNET
$2.13B
| $970K | ﹤0.01% |
114,600
-86,900
| -43% | -$805K |
|
3000
PUT
Brookfield Asset Management
BAM
$84.4B
| $969K | ﹤0.01% |
18,500
-4,000
| -18% | -$215K |
|
Similar funds
IMC Chicago's Q4 2025 Portfolio in Review
As of Q4 2025, IMC Chicago held 4,538 positions worth $275B, up 0.14% from $275B the previous quarter. Its ten largest holdings account for 36% of the portfolio.
IMC Chicago's Q4 2025 filing shows 985 new, 1,665 increased, 1,358 reduced and 525 closed positions. Its largest new stake was Palantir: 601,853 shares worth $107M. The largest sale was iShares Bitcoin Trust, an estimated $167M.
By sector, the portfolio is most concentrated in Technology at 0.56% of assets, up from 0.33% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- IMC Chicago's largest Q4 2025 buy was Palantir: 601,853 shares worth $107M.
- IMC Chicago added most to iShares Russell 2000 ETF in Q4 2025, an estimated $302M increase.
- IMC Chicago's biggest Q4 2025 reduction was iShares Bitcoin Trust, cutting an estimated $167M.
- IMC Chicago fully exited Amazon in Q4 2025, selling an estimated $97.8M.
- IMC Chicago's ten largest holdings make up 36% of its $275B portfolio in Q4 2025.
- IMC Chicago opened 985 new positions and closed 525 in Q4 2025.
- IMC Chicago's portfolio value rose 0.14% quarter-over-quarter to $275B.
Based on IMC Chicago's 13F filing for Q4 2025, filed 29 Jan 2026.