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 | |
|---|---|---|---|---|---|---|
3951
CALL
Amcor
AMCR
$21.6B
| $452K | ﹤0.01% |
7,540
+3,020
| +67% | +$179K |
|
3952
CALL
Butterfly Network
BFLY
$1.88B
| $452K | ﹤0.01% |
67,600
-272,600
| -80% | -$2.4M |
|
3953
PUT
Liquidity Services
LQDT
$1.23B
| $452K | ﹤0.01% |
20,500
+17,300
| +541% | +$385K |
|
3954
NOV
NOV
$7.11B
| $452K | ﹤0.01% |
33,410
-84,808
| -72% | -$1.16M |
|
|
MDC
3955
CALL
DELISTED
M.D.C. Holdings, Inc.
MDC
| $452K | ﹤0.01% |
8,100
+3,460
| +75% | +$176K |
|
3956
PUT
HCI Group
HCI
$2.29B
| $451K | ﹤0.01% |
5,400
+4,500
| +500% | +$525K |
|
3957
CALL
Madison Square Garden
MSGS
$9.58B
| $451K | ﹤0.01% |
2,600
+1,100
| +73% | +$200K |
|
3958
PUT
SSR Mining
SSRM
$5.27B
| $451K | ﹤0.01% |
25,500
-62,400
| -71% | -$1.07M |
|
|
VLDR
3959
PUT
DELISTED
Velodyne Lidar, Inc. Common Stock
VLDR
| $451K | ﹤0.01% |
97,200
-107,300
| -52% | -$627K |
|
3960
PUT
The RealReal
REAL
$1.44B
| $450K | ﹤0.01% |
38,800
-18,000
| -32% | -$237K |
|
3961
CALL
CryoPort
CYRX
$765M
| $449K | ﹤0.01% |
7,600
+6,300
| +485% | +$436K |
|
3962
PUT
Element Solutions
ESI
$8.89B
| $449K | ﹤0.01% |
18,500
-80,700
| -81% | -$1.9M |
|
3963
TechnipFMC
FTI
$28.9B
| $449K | ﹤0.01% |
75,933
+18,909
| +33% | +$130K |
|
|
HBI
3964
PUT
DELISTED
Hanesbrands
HBI
| $449K | ﹤0.01% |
26,900
-27,800
| -51% | -$473K |
|
3965
Hecla Mining
HL
$9.76B
| $449K | ﹤0.01% |
86,053
-53,826
| -38% | -$301K |
|
3966
CALL
US Physical Therapy
USPH
$1.2B
| $449K | ﹤0.01% |
4,700
+4,100
| +683% | +$411K |
|
3967
iShares S&P GSCI Commodity-Indexed Trust
GSG
$968M
| $447K | ﹤0.01% |
26,160
-53,618
| -67% | -$925K |
|
3968
PUT
IPG Photonics
IPGP
$3.57B
| $447K | ﹤0.01% |
2,600
-6,900
| -73% | -$1.14M |
|
|
SILV
3969
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $447K | ﹤0.01% |
56,573
-6,512
| -10% | -$52.8K |
|
|
MFGP
3970
DELISTED
Micro Focus International plc. American Depositary Shares, each representing One Ordinary Share
MFGP
| $447K | ﹤0.01% |
+80,332
| New | +$409K |
|
3971
CALL
Copa Holdings
CPA
$5.71B
| $446K | ﹤0.01% |
5,400
+600
| +13% | +$47K |
|
3972
Impinj
PI
$4.05B
| $446K | ﹤0.01% |
5,037
+4,413
| +707% | +$320K |
|
3973
CALL
Sportradar
SRAD
$4.38B
| $446K | ﹤0.01% |
+25,400
| New | +$516K |
|
|
CHNG
3974
CALL
DELISTED
Change Healthcare Inc. Common Stock
CHNG
| $446K | ﹤0.01% |
20,900
+5,000
| +31% | +$105K |
|
|
PTR
3975
PUT
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
| $446K | ﹤0.01% |
10,100
-21,700
| -68% | -$1.02M |
|
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.