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 | Miscellaneous | 97.43% |
| 2 | Technology | 0.63% |
| 3 | Consumer Discretionary | 0.43% |
| 4 | Healthcare | 0.36% |
| 5 | Communication Services | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
VISN
1476
CALL
Vistance Networks Inc
VISN
$1.48B
| $3.65M | ﹤0.01% |
330,500
+303,000
| +1,102% | +$3.32M |
|
|
CMRC
1477
PUT
Commerce.com Inc Series 1
CMRC
$201M
| $3.64M | ﹤0.01% |
103,000
+24,300
| +31% | +$1.14M |
|
1478
CALL
Canadian Imperial Bank of Commerce
CM
$107B
| $3.64M | ﹤0.01% |
62,400
-30,000
| -32% | -$1.75M |
|
1479
AdvisorShares Pure US Cannabis ETF
MSOS
$1B
| $3.63M | ﹤0.01% |
141,929
+100,973
| +247% | +$2.79M |
|
1480
PagSeguro Digital
PAGS
$2.73B
| $3.63M | ﹤0.01% |
138,279
+62,143
| +82% | +$2.02M |
|
1481
CALL
American Eagle Outfitters
AEO
$2.88B
| $3.62M | ﹤0.01% |
143,100
+49,500
| +53% | +$1.26M |
|
|
FTCH
1482
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $3.62M | ﹤0.01% |
108,348
+13,217
| +14% | +$486K |
|
1483
CALL
Huntsman Corp
HUN
$1.71B
| $3.62M | ﹤0.01% |
103,800
+46,400
| +81% | +$1.51M |
|
|
DFS
1484
CALL
DELISTED
Discover Financial Services
DFS
| $3.62M | ﹤0.01% |
31,300
-41,600
| -57% | -$4.92M |
|
|
ZNGA
1485
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $3.62M | ﹤0.01% |
564,900
+392,398
| +227% | +$2.71M |
|
1486
PUT
MSCI
MSCI
$40.8B
| $3.61M | ﹤0.01% |
5,900
+4,200
| +247% | +$2.63M |
|
1487
SLB Ltd
SLB
$86B
| $3.61M | ﹤0.01% |
120,573
-37,798
| -24% | -$1.19M |
|
|
ITCI
1488
CALL
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $3.61M | ﹤0.01% |
68,900
+27,200
| +65% | +$1.14M |
|
1489
PUT
Fair Isaac
FICO
$19.5B
| $3.6M | ﹤0.01% |
8,300
-4,600
| -36% | -$1.83M |
|
1490
US Bancorp
USB
$98.2B
| $3.59M | ﹤0.01% |
+63,991
| New | +$3.78M |
|
|
RDFN
1491
CALL
DELISTED
Redfin
RDFN
| $3.59M | ﹤0.01% |
93,500
+26,700
| +40% | +$1.21M |
|
1492
CALL
American Water Works
AWK
$28B
| $3.59M | ﹤0.01% |
19,000
-35,100
| -65% | -$6.13M |
|
|
BAND
1493
PUT
Bandwidth Inc
BAND
$1.35B
| $3.59M | ﹤0.01% |
50,000
+43,700
| +694% | +$3.41M |
|
1494
PUT
BWX Technologies
BWXT
$14.6B
| $3.59M | ﹤0.01% |
74,900
+70,400
| +1,564% | +$3.68M |
|
1495
Coty
COTY
$2.47B
| $3.58M | ﹤0.01% |
341,427
+266,945
| +358% | +$2.51M |
|
1496
PUT
UBS Group
UBS
$170B
| $3.58M | ﹤0.01% |
200,600
+106,300
| +113% | +$1.87M |
|
|
PSTH
1497
CALL
DELISTED
Pershing Square Tontine Holdings, Ltd.
PSTH
| $3.56M | ﹤0.01% |
180,600
-676,300
| -79% | -$13.4M |
|
1498
PUT
Wingstop
WING
$2.95B
| $3.56M | ﹤0.01% |
20,600
+15,500
| +304% | +$2.6M |
|
1499
Direxion Daily Energy Bull 2X ETF
ERX
$256M
| $3.55M | ﹤0.01% |
119,886
-18,838
| -14% | -$575K |
|
1500
PUT
SentinelOne
S
$6.68B
| $3.55M | ﹤0.01% |
+70,300
| New | +$4.12M |
|
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's Q4 2021 filing shows 2,268 new, 3,786 increased, 4,257 reduced and 1,643 closed positions. Its largest new stake was iShares China Large-Cap ETF: 902,666 shares worth $33M. The largest sale was AMC Entertainment Holdings, an estimated $49.5M.
By sector, the portfolio is most concentrated in Miscellaneous at 97% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- 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 2,268 new positions and closed 1,643 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.