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 | |
|---|---|---|---|---|---|---|
3201
CALL
AvePoint
AVPT
$2.72B
| $785K | ﹤0.01% |
+124,900
| New | +$967K |
|
3202
PUT
Dillards
DDS
$8.96B
| $784K | ﹤0.01% |
3,200
-17,300
| -84% | -$4.55M |
|
3203
CALL
Payoneer
PAYO
$2.41B
| $784K | ﹤0.01% |
106,700
-282,600
| -73% | -$2.17M |
|
3204
CALL
Sinclair Inc
SBGI
$974M
| $784K | ﹤0.01% |
29,700
+13,300
| +81% | +$355K |
|
3205
CALL
AbCellera Biologics
ABCL
$1.6B
| $782K | ﹤0.01% |
54,700
+42,200
| +338% | +$640K |
|
3206
Ameresco
AMRC
$1.12B
| $781K | ﹤0.01% |
+9,592
| New | +$767K |
|
3207
CALL
Aspen Aerogels
ASPN
$385M
| $781K | ﹤0.01% |
15,700
+4,500
| +40% | +$237K |
|
3208
CALL
Brookfield Renewable
BEP
$9.74B
| $780K | ﹤0.01% |
21,800
+19,400
| +808% | +$715K |
|
3209
PUT
Veeco
VECO
$2.96B
| $780K | ﹤0.01% |
27,400
+27,300
| +27,300% | +$696K |
|
|
DCP
3210
DELISTED
DCP Midstream, LP
DCP
| $780K | ﹤0.01% |
+28,389
| New | +$825K |
|
|
REGI
3211
PUT
DELISTED
Renewable Energy Group, Inc.
REGI
| $780K | ﹤0.01% |
18,400
+3,900
| +27% | +$199K |
|
|
MFA
3212
CALL
MFA Financial
MFA
$927M
| $779K | ﹤0.01% |
42,725
-9,975
| -19% | -$182K |
|
|
MPT
3213
Medical Properties Trust
MPT
$2.86B
| $778K | ﹤0.01% |
+32,946
| New | +$706K |
|
3214
CALL
Open Text
OTEX
$5.73B
| $778K | ﹤0.01% |
16,400
-77,100
| -82% | -$3.79M |
|
3215
Qorvo
QRVO
$7.92B
| $778K | ﹤0.01% |
4,979
-12,459
| -71% | -$1.98M |
|
3216
CALL
Valaris Ltd Warrants
VAL.WS
$730M
| $777K | ﹤0.01% |
21,600
-8,800
| -29% | -$30K |
|
|
IMGN
3217
PUT
DELISTED
Immunogen Inc
IMGN
| $776K | ﹤0.01% |
104,600
+92,100
| +737% | +$572K |
|
|
PENG
3218
Penguin Solutions Inc
PENG
$2.69B
| $775K | ﹤0.01% |
21,862
-61,756
| -74% | -$1.75M |
|
3219
PUT
Acadia Pharmaceuticals
ACAD
$4.35B
| $774K | ﹤0.01% |
33,200
+1,100
| +3% | +$22.1K |
|
3220
CALL
Celanese
CE
$4.87B
| $773K | ﹤0.01% |
4,600
-3,000
| -39% | -$489K |
|
3221
CALL
Designer Brands
DBI
$298M
| $773K | ﹤0.01% |
54,400
-2,000
| -4% | -$28.6K |
|
3222
PUT
Eastman Chemical
EMN
$7.74B
| $773K | ﹤0.01% |
6,400
-100
| -2% | -$11.1K |
|
3223
FedEx
FDX
$73.5B
| $772K | ﹤0.01% |
2,987
-17,088
| -85% | -$4.1M |
|
3224
CALL
LGI Homes
LGIH
$1.4B
| $772K | ﹤0.01% |
5,000
+2,700
| +117% | +$395K |
|
|
KEEL
3225
PUT
Keel Infrastructure Corp
KEEL
$2.45B
| $771K | ﹤0.01% |
+152,700
| New | +$943K |
|
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.