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 | |
|---|---|---|---|---|---|---|
2851
Ocular Therapeutix
OCUL
$2.03B
| $1.18M | ﹤0.01% |
+97,202
| New | +$1.18M |
|
2852
PUT
Ionis Pharmaceuticals
IONS
$9.46B
| $1.18M | ﹤0.01% |
14,900
+1,400
| +10% | +$105K |
|
2853
CALL
TFI International
TFII
$11.4B
| $1.18M | ﹤0.01% |
+11,400
| New | +$1.06M |
|
2854
PUT
Cytokinetics
CYTK
$10.8B
| $1.18M | ﹤0.01% |
+18,500
| New | +$1.15M |
|
2855
Advance Auto Parts
AAP
$3.36B
| $1.17M | ﹤0.01% |
29,889
-14,159
| -32% | -$710K |
|
2856
Rapid7
RPD
$776M
| $1.17M | ﹤0.01% |
77,160
+63,194
| +452% | +$1.04M |
|
2857
CALL
Parsons
PSN
$4.93B
| $1.17M | ﹤0.01% |
18,900
-12,200
| -39% | -$955K |
|
2858
CALL
Blackstone Mortgage Trust
BXMT
$2.39B
| $1.17M | ﹤0.01% |
61,000
-5,700
| -9% | -$108K |
|
2859
PUT
Textron
TXT
$15.3B
| $1.16M | ﹤0.01% |
13,300
-10,900
| -45% | -$912K |
|
2860
PUT
Array Technologies
ARRY
$819M
| $1.16M | ﹤0.01% |
125,400
+16,400
| +15% | +$141K |
|
2861
PUT
Concentrix
CNXC
$1.56B
| $1.16M | ﹤0.01% |
27,800
-2,800
| -9% | -$114K |
|
2862
PUT
BlackLine
BL
$1.7B
| $1.16M | ﹤0.01% |
20,900
-28,800
| -58% | -$1.59M |
|
2863
CALL
Columbia Banking Systems
COLB
$8.84B
| $1.15M | ﹤0.01% |
+41,300
| New | +$1.12M |
|
2864
PUT
BlackBerry
BB
$5.18B
| $1.15M | ﹤0.01% |
304,400
-167,900
| -36% | -$738K |
|
2865
CALL
ClearPoint Neuro
CLPT
$444M
| $1.15M | ﹤0.01% |
84,300
+33,800
| +67% | +$627K |
|
2866
PUT
Navios Maritime Partners
NMM
$2.24B
| $1.15M | ﹤0.01% |
21,900
+8,900
| +68% | +$442K |
|
2867
Archer Aviation
ACHR
$4.78B
| $1.15M | ﹤0.01% |
152,673
-150,379
| -50% | -$1.42M |
|
2868
CALL
Patterson-UTI
PTEN
$4.19B
| $1.15M | ﹤0.01% |
187,800
+141,600
| +306% | +$845K |
|
|
TPC
2869
CALL
Tutor Perini Cor
TPC
$5.18B
| $1.15M | ﹤0.01% |
17,100
+2,200
| +15% | +$144K |
|
2870
Tradr TSLA Bear Daily ETF
TSLQ
$106M
| $1.14M | ﹤0.01% |
+63,003
| New | +$1.4M |
|
2871
CALL
A.O. Smith
AOS
$8.48B
| $1.14M | ﹤0.01% |
17,100
+1,600
| +10% | +$108K |
|
2872
Range Resources
RRC
$9.41B
| $1.14M | ﹤0.01% |
32,366
-17,558
| -35% | -$654K |
|
2873
Goodyear
GT
$1.74B
| $1.14M | ﹤0.01% |
130,251
-186,904
| -59% | -$1.47M |
|
2874
PUT
CoreCivic
CXW
$3.26B
| $1.14M | ﹤0.01% |
59,600
+12,100
| +25% | +$222K |
|
2875
PUT
Ventas
VTR
$47.2B
| $1.14M | ﹤0.01% |
14,700
-6,400
| -30% | -$483K |
|
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.