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 | |
|---|---|---|---|---|---|---|
5851
PUT
Energizer
ENR
$1.48B
| $128K | ﹤0.01% |
3,200
-23,200
| -88% | -$891K |
|
5852
Enova International
ENVA
$6.42B
| $128K | ﹤0.01% |
3,143
-22,927
| -88% | -$870K |
|
5853
FormFactor
FORM
$9.38B
| $128K | ﹤0.01% |
+2,810
| New | +$115K |
|
5854
Fastly Inc
FSLY
$3.9B
| $128K | ﹤0.01% |
3,628
-144,538
| -98% | -$6.28M |
|
5855
Hippo Holdings
HIPO
$869M
| $128K | ﹤0.01% |
+1,813
| New | +$169K |
|
5856
CALL
IGC Pharma
IGC
$25.9M
| $128K | ﹤0.01% |
132,000
+39,400
| +43% | +$52.9K |
|
|
LX
5857
CALL
LexinFintech Holdings
LX
$244M
| $128K | ﹤0.01% |
33,200
-2,200
| -6% | -$10.9K |
|
5858
New York Times
NYT
$12.2B
| $128K | ﹤0.01% |
+2,657
| New | +$131K |
|
5859
PUT
Webster Financial
WBS
$12.6B
| $128K | ﹤0.01% |
2,300
-2,900
| -56% | -$163K |
|
|
MMAT
5860
DELISTED
Meta Materials Inc. Common Stock
MMAT
| $128K | ﹤0.01% |
521
-500
| -49% | -$206K |
|
|
SLGC
5861
PUT
DELISTED
SomaLogic, Inc. Class A Common Stock
SLGC
| $128K | ﹤0.01% |
+11,000
| New | +$132K |
|
5862
PUT
Banner Corp
BANR
$2.44B
| $127K | ﹤0.01% |
2,100
+1,100
| +110% | +$65.1K |
|
5863
WisdomTree Emerging Markets High Dividend Fund
DEM
$3.97B
| $127K | ﹤0.01% |
2,945
-5,731
| -66% | -$250K |
|
5864
Delek Logistics
DKL
$3.09B
| $127K | ﹤0.01% |
+2,978
| New | +$138K |
|
5865
CALL
Eversource Energy
ES
$27.3B
| $127K | ﹤0.01% |
1,400
-500
| -26% | -$43K |
|
5866
EXL Service
EXLS
$5.21B
| $127K | ﹤0.01% |
+4,405
| New | +$116K |
|
|
MTA
5867
Metalla Royalty & Streaming
MTA
$734M
| $127K | ﹤0.01% |
18,372
+12,135
| +195% | +$89.2K |
|
5868
NMI Holdings
NMIH
$3.34B
| $127K | ﹤0.01% |
5,834
-21,062
| -78% | -$468K |
|
5869
Ocular Therapeutix
OCUL
$1.89B
| $127K | ﹤0.01% |
18,297
-12,709
| -41% | -$98.7K |
|
|
STKL
5870
PUT
DELISTED
SunOpta
STKL
| $127K | ﹤0.01% |
18,300
+13,300
| +266% | +$96.2K |
|
5871
PUT
Zurn Elkay Water Solutions
ZWS
$8.82B
| $127K | ﹤0.01% |
+3,500
| New | +$126K |
|
|
REUN
5872
DELISTED
Reunion Neuroscience Inc. Common Shares
REUN
| $127K | ﹤0.01% |
+10,395
| New | +$223K |
|
|
CPLG
5873
PUT
DELISTED
CorePoint Lodging Inc. Common Stock
CPLG
| $127K | ﹤0.01% |
8,100
-50,700
| -86% | -$800K |
|
5874
PUT
Aqua Metals
AQMS
$8.89M
| $126K | ﹤0.01% |
516
+363
| +237% | +$128K |
|
|
BHR
5875
PUT
Braemar Hotels & Resorts
BHR
$144M
| $126K | ﹤0.01% |
24,800
+7,500
| +43% | +$36.8K |
|
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.