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 | |
|---|---|---|---|---|---|---|
2026
CALL
EVgo
EVGO
$200M
| $2.05M | ﹤0.01% |
+206,500
| New | +$2.26M |
|
2027
Incyte
INCY
$23.5B
| $2.05M | ﹤0.01% |
27,946
-1,601
| -5% | -$108K |
|
|
TSP
2028
PUT
DELISTED
TuSimple Holdings Inc. Class A Common Stock
TSP
| $2.05M | ﹤0.01% |
57,200
+27,100
| +90% | +$1.01M |
|
2029
CALL
Coherent
COHR
$55.2B
| $2.05M | ﹤0.01% |
30,000
-42,100
| -58% | -$2.65M |
|
2030
PUT
NRG Energy
NRG
$29.8B
| $2.05M | ﹤0.01% |
47,500
-106,800
| -69% | -$4.19M |
|
|
ANSS
2031
CALL
DELISTED
Ansys
ANSS
| $2.04M | ﹤0.01% |
5,100
-1,600
| -24% | -$615K |
|
2032
PUT
Cenovus Energy
CVE
$54.6B
| $2.04M | ﹤0.01% |
166,200
-97,900
| -37% | -$1.17M |
|
2033
PUT
PubMatic
PUBM
$581M
| $2.04M | ﹤0.01% |
59,800
+38,400
| +179% | +$1.25M |
|
2034
Innovative Industrial Properties
IIPR
$1.78B
| $2.03M | ﹤0.01% |
7,734
+6,798
| +726% | +$1.74M |
|
2035
PUT
Acacia Research
ACTG
$450M
| $2.03M | ﹤0.01% |
395,900
+370,100
| +1,434% | +$2M |
|
2036
ResMed
RMD
$28.3B
| $2.03M | ﹤0.01% |
+7,794
| New | +$2.02M |
|
2037
CALL
Vornado Realty Trust
VNO
$7.47B
| $2.03M | ﹤0.01% |
48,500
-37,100
| -43% | -$1.6M |
|
2038
CALL
Infosys
INFY
$45B
| $2.02M | ﹤0.01% |
80,000
-211,600
| -73% | -$4.92M |
|
|
CCXI
2039
PUT
DELISTED
ChemoCentryx, Inc.
CCXI
| $2.02M | ﹤0.01% |
55,600
-213,100
| -79% | -$7.48M |
|
2040
PUT
Public Storage
PSA
$60.2B
| $2.02M | ﹤0.01% |
5,400
-5,600
| -51% | -$1.87M |
|
2041
Cameco
CCJ
$38.3B
| $2.02M | ﹤0.01% |
92,696
+18,000
| +24% | +$435K |
|
2042
CALL
MSCI
MSCI
$40B
| $2.02M | ﹤0.01% |
3,300
-900
| -21% | -$564K |
|
2043
PUT
Fastly Inc
FSLY
$3.17B
| $2.02M | ﹤0.01% |
57,000
-360,200
| -86% | -$15.7M |
|
|
VTNR
2044
CALL
DELISTED
Vertex Energy, Inc
VTNR
| $2.02M | ﹤0.01% |
445,700
+305,700
| +218% | +$1.46M |
|
2045
Acadia Pharmaceuticals
ACAD
$4.25B
| $2.02M | ﹤0.01% |
86,393
+35,041
| +68% | +$705K |
|
2046
Danaher
DHR
$135B
| $2.02M | ﹤0.01% |
+6,915
| New | +$1.9M |
|
|
CDK
2047
CALL
DELISTED
CDK Global, Inc.
CDK
| $2.02M | ﹤0.01% |
48,300
+28,700
| +146% | +$1.2M |
|
2048
CALL
Global E Online
GLBE
$6.08B
| $2.01M | ﹤0.01% |
+31,700
| New | +$1.91M |
|
2049
PUT
Vipshop
VIPS
$6.84B
| $2.01M | ﹤0.01% |
239,200
-625,100
| -72% | -$6.54M |
|
2050
State Street SPDR S&P Metals & Mining ETF
XME
$4.05B
| $2M | ﹤0.01% |
44,711
-17,805
| -28% | -$780K |
|
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.