Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.6M |
| 2 |
Shopify
SHOP
|
+$39.6M |
| 3 |
iShares China Large-Cap ETF
FXI
|
+$35.4M |
| 4 |
Verizon
VZ
|
+$34.1M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$34.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
AMC Entertainment Holdings
AMC
|
+$49.5M |
| 2 |
GE Aerospace
GE
|
+$35.2M |
| 3 |
Carnival Corporation Ltd
CCL
|
+$30.5M |
| 4 |
Advanced Micro Devices
AMD
|
+$28.8M |
| 5 |
Micron Technology
MU
|
+$23.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.43% |
| 2 | Technology | 0.63% |
| 3 | Consumer Discretionary | 0.43% |
| 4 | Healthcare | 0.36% |
| 5 | Communication Services | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
526
PUT
American Tower
AMT
$81.9B
| $18.9M | 0.02% |
64,500
-13,500
| -17% | -$3.69M |
|
527
PUT
Vertex Pharmaceuticals
VRTX
$138B
| $18.9M | 0.02% |
85,900
+24,000
| +39% | +$4.67M |
|
528
PUT
Waste Management
WM
$87.5B
| $18.9M | 0.02% |
113,000
+90,200
| +396% | +$14.5M |
|
529
CALL
Kimberly-Clark
KMB
$34.9B
| $18.8M | 0.02% |
131,800
-22,000
| -14% | -$2.96M |
|
530
CALL
iShares Core MSCI Emerging Markets ETF
IEMG
$165B
| $18.7M | 0.02% |
316,300
-171,700
| -35% | -$10.6M |
|
|
COUP
531
PUT
DELISTED
Coupa Software Incorporated
COUP
| $18.7M | 0.02% |
118,100
+72,900
| +161% | +$15M |
|
532
PUT
Cigna
CI
$74.7B
| $18.6M | 0.02% |
81,000
+45,200
| +126% | +$9.61M |
|
533
CALL
Chewy
CHWY
$9.69B
| $18.6M | 0.02% |
314,600
-136,000
| -30% | -$8.89M |
|
534
PUT
Centene
CNC
$33.1B
| $18.5M | 0.02% |
225,100
+92,400
| +70% | +$6.77M |
|
535
PUT
Dow Inc
DOW
$21.3B
| $18.5M | 0.02% |
327,000
-136,700
| -29% | -$7.79M |
|
536
CALL
Global Payments
GPN
$24.5B
| $18.5M | 0.02% |
137,200
+110,300
| +410% | +$15.2M |
|
537
CALL
Skyworks Solutions
SWKS
$11.1B
| $18.5M | 0.02% |
119,500
+200
| +0.2% | +$32K |
|
538
PUT
Illumina
ILMN
$33B
| $18.5M | 0.02% |
50,064
-8,121
| -14% | -$3.08M |
|
539
CALL
Caesars Entertainment
CZR
$6.05B
| $18.5M | 0.02% |
197,800
+42,100
| +27% | +$4.27M |
|
540
CALL
Allstate
ALL
$65.6B
| $18.5M | 0.02% |
157,200
+99,500
| +172% | +$11.8M |
|
541
CALL
Ulta Beauty
ULTA
$24.1B
| $18.5M | 0.02% |
44,800
-1,500
| -3% | -$583K |
|
542
CALL
Vanguard FTSE Europe ETF
VGK
$31.1B
| $18.4M | 0.02% |
330,000
+164,600
| +100% | +$11.1M |
|
543
CALL
Kroger
KR
$35.9B
| $18.4M | 0.02% |
406,800
+88,500
| +28% | +$3.72M |
|
544
CALL
Estee Lauder
EL
$37.6B
| $18.4M | 0.02% |
49,700
+35,400
| +248% | +$12M |
|
|
545
PUT
Global Payments
GPN
$24.5B
| $18.4M | 0.02% |
136,100
+106,200
| +355% | +$14.6M |
|
|
B
546
CALL
Barrick Mining
B
$73.7B
| $18.4M | 0.02% |
966,500
+269,100
| +39% | +$5.11M |
|
547
CALL
Suncor Energy
SU
$78.8B
| $18.3M | 0.02% |
731,500
+452,400
| +162% | +$11M |
|
548
CALL
Atlassian
TEAM
$48B
| $18.3M | 0.02% |
47,900
+10,900
| +29% | +$4.38M |
|
549
PUT
S&P Global
SPGI
$131B
| $18.2M | 0.02% |
38,500
-9,600
| -20% | -$4.39M |
|
550
CALL
Enbridge
ENB
$109B
| $18.1M | 0.02% |
464,100
+402,000
| +647% | +$16.1M |
|
Similar funds
Simplex Trading's Q4 2021 Portfolio in Review
As of Q4 2021, Simplex Trading held 12,077 positions worth $99B, down 7.5% from $107B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading's Q4 2021 filing shows 2,268 new, 3,786 increased, 4,257 reduced and 1,643 closed positions. Its largest new stake was iShares China Large-Cap ETF: 902,666 shares worth $33M. The largest sale was AMC Entertainment Holdings, an estimated $49.5M.
By sector, the portfolio is most concentrated in Miscellaneous at 97% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- Simplex Trading's largest Q4 2021 buy was iShares China Large-Cap ETF: 902,666 shares worth $33M.
- Simplex Trading added most to State Street Financial Select Sector SPDR ETF in Q4 2021, an estimated $42.6M increase.
- Simplex Trading's biggest Q4 2021 reduction was AMC Entertainment Holdings, cutting an estimated $49.5M.
- Simplex Trading fully exited Carnival Corporation Ltd in Q4 2021, selling an estimated $30.5M.
- Simplex Trading's ten largest holdings make up 33% of its $99B portfolio in Q4 2021.
- Simplex Trading opened 2,268 new positions and closed 1,643 in Q4 2021.
- Simplex Trading's portfolio value fell 7.5% quarter-over-quarter to $99B.
Based on Simplex Trading's 13F filing for Q4 2021, filed 4 Feb 2022.