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 | |
|---|---|---|---|---|---|---|
|
ICPT
2051
CALL
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $2M | ﹤0.01% |
122,800
+89,600
| +270% | +$1.51M |
|
2052
Vanguard Information Technology ETF
VGT
$139B
| $2M | ﹤0.01% |
+34,904
| New | +$1.92M |
|
2053
PUT
Wabtec
WAB
$51.1B
| $2M | ﹤0.01% |
21,700
-16,100
| -43% | -$1.48M |
|
|
ARNA
2054
CALL
DELISTED
Arena Pharmaceuticals Inc
ARNA
| $2M | ﹤0.01% |
21,500
+9,900
| +85% | +$652K |
|
2055
CALL
Nano X Imaging
NNOX
$62.4M
| $1.99M | ﹤0.01% |
137,200
+3,500
| +3% | +$72.5K |
|
2056
KE Holdings
BEKE
$16.8B
| $1.99M | ﹤0.01% |
99,048
+98,956
| +107,561% | +$2.03M |
|
|
BENE
2057
PUT
DELISTED
Benessere Capital Acquisition Corp. Class A Common Stock
BENE
| $1.99M | ﹤0.01% |
+196,500
| New | +$2.03M |
|
2058
CALL
Sphere 3D
ANY
$14.6M
| $1.99M | ﹤0.01% |
+9,094
| New | +$3.52M |
|
2059
PUT
Travelers Companies
TRV
$80.8B
| $1.99M | ﹤0.01% |
12,700
-9,900
| -44% | -$1.55M |
|
|
IAA
2060
DELISTED
IAA, Inc. Common Stock
IAA
| $1.98M | ﹤0.01% |
39,140
+11,385
| +41% | +$605K |
|
2061
Direxion Daily Junior Gold Miners Index Bear 2X ETF
JDST
$30.4M
| $1.98M | ﹤0.01% |
915
+764
| +506% | +$1.7M |
|
2062
CALL
GrowGeneration
GRWG
$82.9M
| $1.98M | ﹤0.01% |
151,600
-8,200
| -5% | -$157K |
|
|
LOGC
2063
PUT
DELISTED
ContextLogic
LOGC
| $1.97M | ﹤0.01% |
21,157
-52,120
| -71% | -$6.91M |
|
2064
Amplify Alternative Harvest ETF
MJ
$101M
| $1.97M | ﹤0.01% |
14,796
+14,779
| +86,935% | +$2.33M |
|
2065
CALL
Fortune Brands Innovations
FBIN
$6.12B
| $1.97M | ﹤0.01% |
21,528
+19,539
| +982% | +$1.69M |
|
2066
Howmet Aerospace
HWM
$116B
| $1.97M | ﹤0.01% |
61,787
+21,846
| +55% | +$673K |
|
2067
PUT
Sibanye-Stillwater
SBSW
$5.92B
| $1.97M | ﹤0.01% |
156,800
+3,100
| +2% | +$41.6K |
|
2068
CALL
Radware
RDWR
$1.24B
| $1.97M | ﹤0.01% |
47,200
+47,000
| +23,500% | +$1.6M |
|
2069
CALL
TG Therapeutics
TGTX
$8.58B
| $1.96M | ﹤0.01% |
103,300
+54,100
| +110% | +$1.4M |
|
2070
iShares Select U.S. REIT ETF
ICF
$2.12B
| $1.96M | ﹤0.01% |
25,727
+8,126
| +46% | +$574K |
|
2071
CALL
Campbell Soup
CPB
$6.51B
| $1.96M | ﹤0.01% |
45,000
-15,100
| -25% | -$628K |
|
2072
CALL
IonQ
IONQ
$12.3B
| $1.95M | ﹤0.01% |
116,700
+8,900
| +8% | +$148K |
|
2073
PUT
Papa John's
PZZA
$999M
| $1.95M | ﹤0.01% |
14,600
+400
| +3% | +$51.2K |
|
2074
CALL
Fox Class B
FOX
$20.7B
| $1.95M | ﹤0.01% |
52,800
-60,600
| -53% | -$2.22M |
|
2075
PUT
National Grid
NGG
$82.7B
| $1.95M | ﹤0.01% |
29,904
+20,066
| +204% | +$1.18M |
|
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.