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 | |
|---|---|---|---|---|---|---|
1701
CALL
Stem
STEM
$49.2M
| $2.81M | ﹤0.01% |
7,400
+120
| +2% | +$52K |
|
1702
PUT
Brookfield Renewable
BEPC
$6.12B
| $2.8M | ﹤0.01% |
76,100
+19,900
| +35% | +$759K |
|
1703
CALL
Travelers Companies
TRV
$80.8B
| $2.8M | ﹤0.01% |
17,900
-1,200
| -6% | -$188K |
|
|
SAFE
1704
PUT
Safehold
SAFE
$1.19B
| $2.8M | ﹤0.01% |
22,249
+3,020
| +16% | +$368K |
|
1705
CALL
Bumble
BMBL
$367M
| $2.8M | ﹤0.01% |
82,600
-3,600
| -4% | -$153K |
|
|
PBT
1706
Permian Basin Royalty Trust
PBT
$1.36B
| $2.79M | ﹤0.01% |
+276,797
| New | +$2.28M |
|
1707
CarMax
KMX
$8.27B
| $2.79M | ﹤0.01% |
21,400
-14,719
| -41% | -$2.06M |
|
1708
PUT
WEC Energy
WEC
$37.7B
| $2.79M | ﹤0.01% |
28,700
+9,000
| +46% | +$823K |
|
1709
PUT
Ovintiv
OVV
$17.5B
| $2.78M | ﹤0.01% |
86,100
+73,340
| +575% | +$2.62M |
|
1710
CALL
Dutch Bros
BROS
$8.78B
| $2.78M | ﹤0.01% |
+54,600
| New | +$3.03M |
|
1711
PUT
ZTO Express
ZTO
$18.2B
| $2.78M | ﹤0.01% |
98,400
-44,200
| -31% | -$1.32M |
|
1712
ProShares Ultra S&P500
SSO
$7.82B
| $2.77M | ﹤0.01% |
75,796
+20,976
| +38% | +$718K |
|
1713
PUT
Invesco
IVZ
$13.3B
| $2.77M | ﹤0.01% |
120,300
+101,100
| +527% | +$2.46M |
|
1714
CALL
NetApp
NTAP
$32.9B
| $2.77M | ﹤0.01% |
30,100
-15,400
| -34% | -$1.39M |
|
1715
CALL
Labcorp
LH
$24.3B
| $2.77M | ﹤0.01% |
10,243
-30,381
| -75% | -$7.52M |
|
1716
CALL
PubMatic
PUBM
$581M
| $2.76M | ﹤0.01% |
81,200
+80,900
| +26,967% | +$2.64M |
|
|
DOCU
1717
DocuSign
DOCU
$9.63B
| $2.76M | ﹤0.01% |
+18,138
| New | +$4.14M |
|
1718
CALL
Fortive
FTV
$19B
| $2.75M | ﹤0.01% |
47,905
+2,256
| +5% | +$127K |
|
1719
PUT
iQIYI
IQ
$1.18B
| $2.75M | ﹤0.01% |
603,300
-365,300
| -38% | -$2.59M |
|
|
FISV
1720
Fiserv Inc
FISV
$27.2B
| $2.75M | ﹤0.01% |
+26,485
| New | +$2.74M |
|
1721
PUT
Urban Outfitters
URBN
$5.99B
| $2.75M | ﹤0.01% |
93,600
+69,700
| +292% | +$2.21M |
|
1722
CALL
Baker Hughes
BKR
$56.8B
| $2.75M | ﹤0.01% |
114,200
-29,400
| -20% | -$726K |
|
1723
CALL
NovoCure
NVCR
$2.04B
| $2.74M | ﹤0.01% |
36,500
+19,400
| +113% | +$1.95M |
|
1724
Healthcare Realty
HR
$7.42B
| $2.73M | ﹤0.01% |
+81,685
| New | +$2.73M |
|
1725
PUT
Kinder Morgan
KMI
$73.1B
| $2.73M | ﹤0.01% |
172,000
+35,700
| +26% | +$594K |
|
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.