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 | Miscellaneous | 98.48% |
| 2 | Technology | 0.56% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Communication Services | 0.16% |
| 5 | Financials | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
1
PUT
State Street SPDR S&P 500 ETF Trust
SPY
$833B
| $23.5B | 8.54% |
34,493,300
-7,889,400
| -19% | -$5.33B |
2018 Q4
28 quarters
|
|
|
2
CALL
State Street SPDR S&P 500 ETF Trust
SPY
$833B
| $16B | 5.82% |
23,498,700
+2,411,500
| +11% | +$1.63B |
2018 Q4
28 quarters
|
|
|
3
CALL
Tesla
TSLA
$1.51T
| $9.94B | 3.61% |
22,104,400
+611,500
| +3% | +$271M |
2018 Q4
28 quarters
|
|
4
CALL
NVIDIA
NVDA
$5.54T
| $9.51B | 3.45% |
50,983,100
-4,547,200
| -8% | -$846M |
2018 Q4
28 quarters
|
|
|
5
PUT
NVIDIA
NVDA
$5.54T
| $9.19B | 3.34% |
49,252,400
-14,204,800
| -22% | -$2.64B |
2018 Q4
28 quarters
|
|
|
6
PUT
Tesla
TSLA
$1.51T
| $8.33B | 3.02% |
18,521,000
+374,400
| +2% | +$166M |
2018 Q4
28 quarters
|
|
|
7
PUT
Invesco QQQ Trust
QQQ
$507B
| $7.53B | 2.74% |
12,263,400
-882,100
| -7% | -$541M |
2018 Q4
28 quarters
|
|
8
PUT
iShares S&P 100 ETF
OEF
$20.8B
| $5.72B | 2.08% |
29,560,900
+4,011,900
| +16% | +$1.36B |
2021 Q4
16 quarters
|
|
|
9
CALL
Invesco QQQ Trust
QQQ
$507B
| $5.19B | 1.89% |
8,453,400
+273,800
| +3% | +$168M |
2018 Q4
28 quarters
|
|
10
CALL
Meta Platforms (Facebook)
META
$1.83T
| $5B | 1.82% |
7,580,200
+1,479,400
| +24% | +$988M |
2018 Q4
28 quarters
|
|
11
CALL
Apple
AAPL
$4.91T
| $4.66B | 1.69% |
17,141,000
-913,600
| -5% | -$245M |
2018 Q4
28 quarters
|
|
|
12
PUT
Meta Platforms (Facebook)
META
$1.83T
| $3.3B | 1.2% |
5,000,200
+415,900
| +9% | +$278M |
2018 Q4
28 quarters
|
|
13
CALL
Alphabet (Google) Class A
GOOGL
$4.3T
| $3.22B | 1.17% |
10,282,800
-671,400
| -6% | -$192M |
2018 Q4
28 quarters
|
|
|
14
PUT
Apple
AAPL
$4.91T
| $3.18B | 1.16% |
11,703,400
-1,731,800
| -13% | -$465M |
2018 Q4
28 quarters
|
|
15
CALL
Microsoft
MSFT
$3.97T
| $2.99B | 1.09% |
6,180,200
-1,735,700
| -22% | -$870M |
2018 Q4
28 quarters
|
|
|
16
PUT
Broadcom
AVGO
$1.73T
| $2.84B | 1.03% |
8,211,500
+1,123,300
| +16% | +$402M |
2018 Q4
28 quarters
|
|
|
17
CALL
iShares S&P 100 ETF
OEF
$20.8B
| $2.57B | 0.93% |
18,704,400
+1,162,300
| +7% | +$395M |
2021 Q4
16 quarters
|
|
|
18
PUT
Alphabet (Google) Class A
GOOGL
$4.3T
| $2.53B | 0.92% |
8,089,500
-551,400
| -6% | -$158M |
2018 Q4
28 quarters
|
|
|
19
CALL
Amazon
AMZN
$2.83T
| $2.28B | 0.83% |
9,898,400
-1,479,800
| -13% | -$339M |
2018 Q4
28 quarters
|
|
20
PUT
Netflix
NFLX
$293B
| $2.25B | 0.82% |
24,028,400
-5,797,600
| -19% | -$625M |
2018 Q4
28 quarters
|
|
|
21
CALL
Broadcom
AVGO
$1.73T
| $2.21B | 0.8% |
6,374,200
-209,100
| -3% | -$74.8M |
2018 Q4
28 quarters
|
|
22
CALL
Advanced Micro Devices
AMD
$993B
| $2.2B | 0.8% |
10,293,900
-1,412,900
| -12% | -$317M |
2018 Q4
28 quarters
|
|
|
23
PUT
Microsoft
MSFT
$3.97T
| $2.12B | 0.77% |
4,390,300
-242,800
| -5% | -$122M |
2018 Q4
28 quarters
|
|
24
CALL
Strategy Inc
MSTR
$61.5B
| $1.9B | 0.69% |
12,478,000
-589,400
| -5% | -$136M |
2021 Q1
19 quarters
|
|
25
CALL
UnitedHealth
UNH
$340B
| $1.88B | 0.68% |
5,709,100
-739,300
| -11% | -$251M |
2019 Q1
27 quarters
|
|
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 Miscellaneous at 98% of assets, up from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- 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.