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 | |
|---|---|---|---|---|---|---|
101
PUT
ExxonMobil
XOM
$629B
| $149M | 0.15% |
2,436,200
+783,300
| +47% | +$49M |
|
102
CALL
Mastercard
MA
$476B
| $148M | 0.15% |
413,200
-98,100
| -19% | -$33.9M |
|
103
PUT
Cisco
CSCO
$442B
| $148M | 0.15% |
2,327,800
+367,600
| +19% | +$21M |
|
104
PUT
Intel
INTC
$530B
| $147M | 0.15% |
2,855,100
+81,500
| +3% | +$4.17M |
|
105
CALL
Strategy Inc
MSTR
$37B
| $144M | 0.15% |
2,649,000
+1,850,000
| +232% | +$127M |
|
106
PUT
Starbucks
SBUX
$119B
| $141M | 0.14% |
1,202,200
+135,800
| +13% | +$15.3M |
|
107
CALL
Berkshire Hathaway Class B
BRK.B
$1.06T
| $138M | 0.14% |
461,500
+28,000
| +6% | +$8.02M |
|
108
PUT
ARK Space & Defense Innovation ETF
ARKX
$823M
| $138M | 0.14% |
1,792,600
-203,500
| -10% | -$4.01M |
|
109
CALL
Ford
F
$56.9B
| $136M | 0.14% |
6,544,400
+1,665,700
| +34% | +$30.7M |
|
110
PUT
Moderna
MRNA
$23.7B
| $136M | 0.14% |
534,900
-76,200
| -12% | -$22.3M |
|
111
CALL
Nike
NKE
$63.7B
| $135M | 0.14% |
809,000
-207,300
| -20% | -$34.2M |
|
112
PUT
AT&T
T
$155B
| $134M | 0.14% |
7,216,462
+2,762,658
| +62% | +$51.6M |
|
113
CALL
Zoom
ZM
$26.3B
| $132M | 0.13% |
716,400
+351,700
| +96% | +$82.7M |
|
114
PUT
Snowflake
SNOW
$94.2B
| $130M | 0.13% |
385,100
+87,000
| +29% | +$30.3M |
|
115
CALL
AutoZone
AZO
$49.2B
| $130M | 0.13% |
62,100
+58,600
| +1,674% | +$109M |
|
116
PUT
PepsiCo
PEP
$184B
| $129M | 0.13% |
745,100
+405,300
| +119% | +$66.2M |
|
117
CALL
iShares Morningstar Value ETF
ILCV
$1.3B
| $126M | 0.13% |
1,913,700
+847,300
| +79% | +$57M |
|
118
CALL
Direxion Daily Technology Bull 3x ETF
TECL
$5.6B
| $123M | 0.12% |
2,130,600
+377,100
| +22% | +$28.3M |
|
119
CALL
United States Oil Fund
USO
$2.31B
| $122M | 0.12% |
2,240,900
+255,300
| +13% | +$13.9M |
|
120
PUT
FedEx
FDX
$75.2B
| $121M | 0.12% |
468,900
-81,100
| -15% | -$19.5M |
|
121
PUT
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$6.07B
| $121M | 0.12% |
1,390,300
+90,600
| +7% | +$2.76M |
|
|
ATVI
122
CALL
DELISTED
Activision Blizzard
ATVI
| $120M | 0.12% |
1,806,300
+1,421,200
| +369% | +$97.1M |
|
123
PUT
NIO
NIO
$12B
| $120M | 0.12% |
3,792,600
-1,022,200
| -21% | -$37.6M |
|
124
PUT
General Motors
GM
$71.7B
| $119M | 0.12% |
2,029,500
+60,800
| +3% | +$3.55M |
|
|
125
PUT
GE Aerospace
GE
$353B
| $119M | 0.12% |
2,017,120
-513,309
| -20% | -$32.2M |
|
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.