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 | Technology | 0.61% |
| 2 | Consumer Discretionary | 0.43% |
| 3 | Healthcare | 0.35% |
| 4 | Communication Services | 0.23% |
| 5 | Financials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2901
InMode
INMD
$888M
| $965K | ﹤0.01% |
+13,677
| New | +$1.1M |
|
|
AMRN
2902
CALL
Amarin Corp
AMRN
$286M
| $964K | ﹤0.01% |
14,305
-235
| -2% | -$19.5K |
|
2903
PUT
BJs Wholesale Club
BJ
$12.2B
| $964K | ﹤0.01% |
14,400
-96,300
| -87% | -$6.01M |
|
2904
PUT
Community Health Systems
CYH
$388M
| $964K | ﹤0.01% |
72,500
+50,300
| +227% | +$632K |
|
2905
CALL
Main Street Capital
MAIN
$5.01B
| $964K | ﹤0.01% |
21,500
-3,600
| -14% | -$158K |
|
|
MTBL
2906
PUT
DELISTED
Moatable, Inc. American Depositary Share (each representing forty-five (45) Class A Ordinary Shares)
MTBL
| $964K | ﹤0.01% |
657,000
+437,000
| +199% | +$958K |
|
2907
CALL
Fomento Económico Mexicano
FMX
$44.9B
| $963K | ﹤0.01% |
12,400
+9,800
| +377% | +$768K |
|
|
MAXN
2908
CALL
DELISTED
Maxeon Solar Technologies
MAXN
| $963K | ﹤0.01% |
693
-83
| -11% | -$154K |
|
2909
CALL
Tenable Holdings
TENB
$3.63B
| $963K | ﹤0.01% |
17,500
-5,900
| -25% | -$305K |
|
2910
PUT
Scotiabank
BNS
$106B
| $960K | ﹤0.01% |
13,400
-32,400
| -71% | -$2.14M |
|
2911
CALL
Vanda Pharmaceuticals
VNDA
$319M
| $960K | ﹤0.01% |
61,200
+55,400
| +955% | +$965K |
|
2912
CALL
Newmark Group
NMRK
$2.81B
| $959K | ﹤0.01% |
51,300
+46,000
| +868% | +$733K |
|
2913
PUT
Albertsons Companies
ACI
$5.61B
| $957K | ﹤0.01% |
31,700
+22,700
| +252% | +$719K |
|
2914
Empire State Realty Trust
ESRT
$973M
| $956K | ﹤0.01% |
107,417
+86,765
| +420% | +$856K |
|
2915
CALL
Jazz Pharmaceuticals
JAZZ
$15.9B
| $955K | ﹤0.01% |
7,500
-14,900
| -67% | -$1.96M |
|
2916
PUT
Park Hotels & Resorts
PK
$3.02B
| $955K | ﹤0.01% |
50,600
+18,700
| +59% | +$352K |
|
2917
CALL
LoveSac
LOVE
$247M
| $954K | ﹤0.01% |
14,400
+1,200
| +9% | +$87.9K |
|
2918
Franco-Nevada
FNV
$41.2B
| $953K | ﹤0.01% |
+6,896
| New | +$953K |
|
2919
PUT
Guidewire Software
GWRE
$12.7B
| $953K | ﹤0.01% |
8,400
-1,800
| -18% | -$213K |
|
|
VRE
2920
PUT
DELISTED
Veris Residential
VRE
| $953K | ﹤0.01% |
51,900
-20,200
| -28% | -$369K |
|
|
FYBR
2921
CALL
DELISTED
Frontier Communications
FYBR
| $952K | ﹤0.01% |
32,300
+12,000
| +59% | +$372K |
|
2922
PUT
Western Union
WU
$2.57B
| $952K | ﹤0.01% |
53,400
+36,000
| +207% | +$664K |
|
|
VNE
2923
DELISTED
Veoneer, Inc.
VNE
| $952K | ﹤0.01% |
+26,858
| New | +$950K |
|
|
2924
LoveSac
LOVE
$247M
| $951K | ﹤0.01% |
14,355
+11,854
| +474% | +$868K |
|
2925
Cognyte Software
CGNT
$648M
| $950K | ﹤0.01% |
60,688
+57,175
| +1,628% | +$1.16M |
|
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 withdrew a net $10.8B in Q4 2021, closing 1,645 positions and reducing 4,258 holdings. Its most notable exit was Carnival Corporation Ltd, an estimated $30.5M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.61% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in iShares China Large-Cap ETF worth $33M.
- 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 2,269 new positions and closed 1,645 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.