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 | |
|---|---|---|---|---|---|---|
|
TWOU
5376
PUT
DELISTED
2U Inc
TWOU
| $176K | ﹤0.01% |
293
-970
| -77% | -$773K |
|
|
HT
5377
PUT
DELISTED
Hersha Hospitality Trust Priority Class A Common Shares of Beneficial Interest
HT
| $176K | ﹤0.01% |
19,300
+9,200
| +91% | +$86.8K |
|
|
BNFT
5378
PUT
DELISTED
Benefitfocus, Inc.
BNFT
| $176K | ﹤0.01% |
16,600
-45,100
| -73% | -$484K |
|
|
PSXP
5379
PUT
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
| $176K | ﹤0.01% |
4,900
-36,600
| -88% | -$1.36M |
|
|
DCH
5380
PUT
Dauch Corp
DCH
$1.34B
| $175K | ﹤0.01% |
18,800
-6,600
| -26% | -$63.1K |
|
|
IMMP
5381
Immutep
IMMP
$56.3M
| $175K | ﹤0.01% |
53,410
+51,236
| +2,357% | +$196K |
|
5382
ProShares UltraShort Financials
SKF
$10.3M
| $175K | ﹤0.01% |
2,648
+212
| +9% | +$14.7K |
|
|
DTEA
5383
PUT
DELISTED
DAVIDsTEA Inc. Common Stock
DTEA
| $175K | ﹤0.01% |
56,500
-600
| -1% | -$2.12K |
|
|
TDAY
5384
CALL
USA Today Co
TDAY
$1.27B
| $174K | ﹤0.01% |
32,800
-213,800
| -87% | -$1.19M |
|
5385
CALL
Pacira BioSciences
PCRX
$1.04B
| $174K | ﹤0.01% |
2,900
+2,200
| +314% | +$121K |
|
5386
PDF Solutions
PDFS
$1.93B
| $174K | ﹤0.01% |
5,503
+5,129
| +1,371% | +$143K |
|
5387
Spire Global
SPIR
$444M
| $174K | ﹤0.01% |
+6,471
| New | +$262K |
|
5388
PUT
Trimble
TRMB
$13.2B
| $174K | ﹤0.01% |
2,000
-4,300
| -68% | -$369K |
|
|
BMTX
5389
PUT
DELISTED
BM Technologies, Inc.
BMTX
| $174K | ﹤0.01% |
+18,900
| New | +$188K |
|
5390
PUT
Alector
ALEC
$168M
| $173K | ﹤0.01% |
8,400
-1,200
| -13% | -$27.1K |
|
5391
PUT
Butterfly Network
BFLY
$1.89B
| $173K | ﹤0.01% |
25,900
-116,900
| -82% | -$1.03M |
|
5392
CubeSmart
CUBE
$9.39B
| $173K | ﹤0.01% |
3,046
-6,678
| -69% | -$359K |
|
5393
PUT
HF Sinclair
DINO
$16.3B
| $173K | ﹤0.01% |
5,300
-24,700
| -82% | -$832K |
|
5394
CALL
Griffon
GFF
$3.95B
| $173K | ﹤0.01% |
6,100
+5,400
| +771% | +$144K |
|
5395
PUT
Sonoco
SON
$5.57B
| $173K | ﹤0.01% |
3,000
-53,700
| -95% | -$3.21M |
|
|
STKL
5396
DELISTED
SunOpta
STKL
| $173K | ﹤0.01% |
+25,031
| New | +$181K |
|
5397
TFI International
TFII
$11.1B
| $173K | ﹤0.01% |
+1,546
| New | +$168K |
|
5398
CALL
Webster Financial
WBS
$12.5B
| $173K | ﹤0.01% |
3,100
+2,500
| +417% | +$141K |
|
|
ASXC
5399
CALL
DELISTED
Asensus Surgical, Inc.
ASXC
| $173K | ﹤0.01% |
156,600
-48,100
| -23% | -$74.3K |
|
|
SWIR
5400
DELISTED
Sierra Wireless
SWIR
| $173K | ﹤0.01% |
9,827
-5,749
| -37% | -$96.5K |
|
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.