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 | |
|---|---|---|---|---|---|---|
6201
CALL
Playtika
PLTK
$1.48B
| $103K | ﹤0.01% |
6,000
-18,200
| -75% | -$407K |
|
|
PMT
6202
PUT
PennyMac Mortgage Investment
PMT
$824M
| $103K | ﹤0.01% |
6,000
-17,700
| -75% | -$335K |
|
6203
TotalEnergies
TTE
$188B
| $103K | ﹤0.01% |
+2,100
| New | +$104K |
|
|
THCX
6204
DELISTED
AXS Cannabis ETF
THCX
| $103K | ﹤0.01% |
1,216
+941
| +342% | +$103K |
|
|
CELL
6205
PUT
DELISTED
PhenomeX Inc. Common Stock
CELL
| $103K | ﹤0.01% |
5,700
+4,900
| +613% | +$106K |
|
|
BRG
6206
DELISTED
Bluerock Residential Growth REIT, Inc.
BRG
| $103K | ﹤0.01% |
+3,926
| New | +$62.3K |
|
6207
PUT
Applied Industrial Technologies
AIT
$13.2B
| $102K | ﹤0.01% |
+1,000
| New | +$100K |
|
6208
Commercial Metals
CMC
$8.37B
| $102K | ﹤0.01% |
2,828
+377
| +15% | +$12.5K |
|
6209
VanEck Video Gaming and eSports ETF
ESPO
$244M
| $102K | ﹤0.01% |
1,547
-672
| -30% | -$46.8K |
|
6210
PUT
Ethan Allen Interiors
ETD
$614M
| $102K | ﹤0.01% |
+3,900
| New | +$95.2K |
|
|
EVRI
6211
DELISTED
Everi Holdings
EVRI
| $102K | ﹤0.01% |
4,790
-59,907
| -93% | -$1.36M |
|
|
GLDD
6212
PUT
DELISTED
Great Lakes Dredge & Dock
GLDD
| $102K | ﹤0.01% |
6,500
-12,500
| -66% | -$190K |
|
6213
CALL
Gold Royalty Corp
GROY
$667M
| $102K | ﹤0.01% |
+20,800
| New | +$105K |
|
6214
iHeartMedia
IHRT
$576M
| $102K | ﹤0.01% |
+4,865
| New | +$103K |
|
6215
Lucid Motors
LCID
$2.61B
| $102K | ﹤0.01% |
+270
| New | +$102K |
|
6216
Limbach Holdings
LMB
$593M
| $102K | ﹤0.01% |
+11,415
| New | +$83.8K |
|
6217
MPLX
MPLX
$60.2B
| $102K | ﹤0.01% |
3,473
-15,128
| -81% | -$453K |
|
|
MTLS
6218
CALL
Materialise
MTLS
$393M
| $102K | ﹤0.01% |
4,300
+2,200
| +105% | +$51.2K |
|
6219
CALL
Sweetgreen
SG
$725M
| $102K | ﹤0.01% |
+3,200
| New | +$108K |
|
6220
abrdn Physical Gold Shares ETF
SGOL
$7.25B
| $102K | ﹤0.01% |
5,849
-5,171
| -47% | -$89.1K |
|
6221
Teucrium Soybean Fund
SOYB
$60.7M
| $102K | ﹤0.01% |
4,515
-33,441
| -88% | -$730K |
|
6222
CALL
W&T Offshore
WTI
$484M
| $102K | ﹤0.01% |
31,600
-29,200
| -48% | -$112K |
|
|
SILK
6223
PUT
DELISTED
Silk Road Medical, Inc. Common Stock
SILK
| $102K | ﹤0.01% |
+2,400
| New | +$120K |
|
6224
CALL
Bankunited
BKU
$3.43B
| $101K | ﹤0.01% |
2,400
-20,200
| -89% | -$846K |
|
|
CLPR
6225
CALL
Clipper Realty
CLPR
$44.1M
| $101K | ﹤0.01% |
+10,200
| New | +$91.4K |
|
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.