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 | |
|---|---|---|---|---|---|---|
4451
HealthEquity
HQY
$8.41B
| $321K | ﹤0.01% |
+7,259
| New | +$423K |
|
4452
Kimbell Royalty Partners
KRP
$1.48B
| $321K | ﹤0.01% |
23,614
-53,139
| -69% | -$761K |
|
4453
PUT
National Health Investors
NHI
$3.72B
| $321K | ﹤0.01% |
5,600
-6,500
| -54% | -$360K |
|
4454
PUT
PAR Technology
PAR
$699M
| $321K | ﹤0.01% |
6,100
+1,600
| +36% | +$96.4K |
|
|
ECHO
4455
PUT
EchoStar
ECHO
$24.4B
| $321K | ﹤0.01% |
12,200
-3,500
| -22% | -$92.4K |
|
4456
CALL
BlackLine
BL
$1.84B
| $320K | ﹤0.01% |
3,100
-11,000
| -78% | -$1.28M |
|
4457
CALL
Crown Holdings
CCK
$12.8B
| $320K | ﹤0.01% |
2,900
-21,300
| -88% | -$2.26M |
|
4458
CALL
China Yuchai International
CYD
$1.77B
| $320K | ﹤0.01% |
21,500
+13,900
| +183% | +$175K |
|
4459
PUT
iShares Gold Trust
IAU
$62.9B
| $320K | ﹤0.01% |
9,200
-1,900
| -17% | -$64.9K |
|
4460
Navios Maritime Partners
NMM
$2.3B
| $320K | ﹤0.01% |
12,760
-24,732
| -66% | -$687K |
|
4461
CALL
SouthState Bank Corp
SSB
$10.2B
| $320K | ﹤0.01% |
4,000
+3,700
| +1,233% | +$294K |
|
4462
CALL
YPF
YPF
$206B
| $320K | ﹤0.01% |
84,000
-24,100
| -22% | -$101K |
|
|
NMTR
4463
PUT
DELISTED
9 Meters Biopharma
NMTR
| $320K | ﹤0.01% |
16,370
+14,040
| +603% | +$314K |
|
|
BENE
4464
DELISTED
Benessere Capital Acquisition Corp. Class A Common Stock
BENE
| $320K | ﹤0.01% |
+31,623
| New | +$327K |
|
|
ATIP
4465
PUT
DELISTED
ATI Physical Therapy, Inc.
ATIP
| $320K | ﹤0.01% |
1,892
-226
| -11% | -$38.1K |
|
4466
CALL
Sasol
SSL
$7.5B
| $319K | ﹤0.01% |
19,500
+8,900
| +84% | +$154K |
|
|
GBT
4467
PUT
DELISTED
Global Blood Therapeutics, Inc.
GBT
| $319K | ﹤0.01% |
10,900
+3,800
| +54% | +$118K |
|
|
PBCT
4468
DELISTED
People's United Financial Inc
PBCT
| $319K | ﹤0.01% |
17,943
+12,968
| +261% | +$231K |
|
4469
CALL
Entegris
ENTG
$18.1B
| $318K | ﹤0.01% |
2,300
-33,600
| -94% | -$4.7M |
|
4470
PUT
Murphy USA
MUSA
$11.2B
| $318K | ﹤0.01% |
1,600
+100
| +7% | +$17.9K |
|
4471
Playtika
PLTK
$1.52B
| $318K | ﹤0.01% |
18,447
-9,852
| -35% | -$220K |
|
4472
CALL
Riskified
RSKD
$694M
| $318K | ﹤0.01% |
+40,500
| New | +$579K |
|
4473
PUT
iShares 0-5 Year Investment Grade Corporate Bond ETF
SLQD
$2.37B
| $318K | ﹤0.01% |
5,800
+4,200
| +263% | +$215K |
|
|
SQSP
4474
PUT
DELISTED
Squarespace, Inc.
SQSP
| $318K | ﹤0.01% |
10,800
+9,600
| +800% | +$348K |
|
4475
PUT
Clearway Energy Class C
CWEN
$4.94B
| $317K | ﹤0.01% |
8,800
-16,400
| -65% | -$580K |
|
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.