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 | |
|---|---|---|---|---|---|---|
1151
CALL
Ross Stores
ROST
$76.6B
| $5.49M | 0.01% |
48,000
+35,000
| +269% | +$3.91M |
|
1152
PUT
TripAdvisor
TRIP
$1.59B
| $5.44M | 0.01% |
199,600
-114,200
| -36% | -$3.5M |
|
1153
PUT
Dynatrace
DT
$12.1B
| $5.44M | 0.01% |
90,100
-36,600
| -29% | -$2.49M |
|
1154
CALL
S&P Global
SPGI
$126B
| $5.43M | 0.01% |
11,500
-53,200
| -82% | -$24.3M |
|
1155
Airbnb
ABNB
$83.7B
| $5.42M | 0.01% |
32,555
-48,025
| -60% | -$8.46M |
|
1156
CALL
KLA
KLAC
$275B
| $5.42M | 0.01% |
126,000
-133,000
| -51% | -$5.13M |
|
1157
PUT
First Trust Consumer Discretionary AlphaDEX Fund
FXD
$263M
| $5.41M | 0.01% |
65,400
+11,900
| +22% | +$736K |
|
1158
PUT
Vail Resorts
MTN
$5.19B
| $5.41M | 0.01% |
16,500
-13,100
| -44% | -$4.47M |
|
1159
CALL
Virgin Galactic
SPCE
$320M
| $5.4M | 0.01% |
20,190
-26,160
| -56% | -$9.45M |
|
1160
Direxion Daily Technology Bull 3x ETF
TECL
$5.14B
| $5.36M | 0.01% |
62,151
-23,792
| -28% | -$1.79M |
|
1161
Agnico Eagle Mines
AEM
$72.6B
| $5.35M | 0.01% |
100,687
+64,588
| +179% | +$3.43M |
|
1162
CALL
Builders FirstSource
BLDR
$7.84B
| $5.35M | 0.01% |
62,400
-58,200
| -48% | -$3.94M |
|
1163
PUT
Sonos
SONO
$1.75B
| $5.34M | 0.01% |
179,300
+7,800
| +5% | +$248K |
|
1164
Futu Holdings
FUTU
$13.9B
| $5.33M | 0.01% |
123,118
+14,461
| +13% | +$827K |
|
|
TTM.RT
1165
PUT
DELISTED
TATA MOTORS LIMITED RT PUR ADR
TTM.RT
| $5.33M | 0.01% |
166,100
+8,700
| +6% | +$279K |
|
1166
CALL
Coty
COTY
$2.33B
| $5.33M | 0.01% |
507,500
+333,000
| +191% | +$3.13M |
|
1167
CALL
Bank of Montreal
BMO
$125B
| $5.31M | 0.01% |
49,300
-72,000
| -59% | -$7.76M |
|
1168
PUT
HSBC
HSBC
$355B
| $5.31M | 0.01% |
176,000
-68,900
| -28% | -$2.01M |
|
1169
CALL
Nutrien
NTR
$32.7B
| $5.29M | 0.01% |
70,400
+25,000
| +55% | +$1.75M |
|
1170
CALL
Grab
GRAB
$13.5B
| $5.29M | 0.01% |
+742,400
| New | +$5.66M |
|
1171
PUT
Johnson Controls International
JCI
$87.5B
| $5.29M | 0.01% |
65,100
+1,900
| +3% | +$144K |
|
1172
PUT
Enterprise Products Partners
EPD
$83.8B
| $5.29M | 0.01% |
241,000
+8,000
| +3% | +$179K |
|
1173
PUT
Incyte
INCY
$23.5B
| $5.28M | 0.01% |
72,000
+45,400
| +171% | +$3.06M |
|
|
WW
1174
CALL
DELISTED
WW International
WW
| $5.28M | 0.01% |
327,200
+148,400
| +83% | +$2.66M |
|
|
BBBY
1175
CALL
Bed Bath & Beyond
BBBY
$473M
| $5.27M | 0.01% |
98,230
+44,770
| +84% | +$3.38M |
|
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.