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 | |
|---|---|---|---|---|---|---|
151
CALL
Palantir
PLTR
$318B
| $98.2M | 0.1% |
5,395,000
+2,777,900
| +106% | +$61.3M |
|
152
CALL
Coca-Cola
KO
$353B
| $97.3M | 0.1% |
1,643,200
+820,500
| +100% | +$45.7M |
|
153
CALL
Baidu
BIDU
$36.8B
| $97M | 0.1% |
652,200
-665,300
| -50% | -$104M |
|
154
PUT
AbbVie
ABBV
$452B
| $96.9M | 0.1% |
715,900
-86,200
| -11% | -$10.2M |
|
155
PUT
Intuitive Surgical
ISRG
$124B
| $96.9M | 0.1% |
269,600
-117,400
| -30% | -$40.4M |
|
156
CALL
Airbnb
ABNB
$85.5B
| $96.4M | 0.1% |
578,800
-593,800
| -51% | -$105M |
|
157
CALL
Booking.com
BKNG
$139B
| $96.2M | 0.1% |
1,002,500
-207,500
| -17% | -$19.7M |
|
158
PUT
United States Oil Fund
USO
$2.31B
| $95.9M | 0.1% |
1,763,500
+179,900
| +11% | +$9.79M |
|
159
CALL
Oracle
ORCL
$366B
| $95.2M | 0.1% |
1,091,100
+323,000
| +42% | +$30.3M |
|
|
160
PUT
Carnival Corporation Ltd
CCL
$35.8B
| $94.8M | 0.1% |
4,712,000
+1,904,700
| +68% | +$40.7M |
|
161
PUT
Walmart Inc
WMT
$878B
| $94.1M | 0.1% |
1,950,300
-1,426,500
| -42% | -$68.1M |
|
162
PUT
Mercado Libre
MELI
$92.4B
| $94M | 0.09% |
69,700
+31,900
| +84% | +$44.8M |
|
163
PUT
ServiceNow
NOW
$105B
| $93.3M | 0.09% |
718,500
+81,000
| +13% | +$10.6M |
|
164
PUT
McDonald's
MCD
$188B
| $93.1M | 0.09% |
347,400
+11,400
| +3% | +$2.88M |
|
165
PUT
Thermo Fisher Scientific
TMO
$195B
| $92.8M | 0.09% |
139,100
+47,600
| +52% | +$29.7M |
|
166
PUT
CVS Health
CVS
$141B
| $92M | 0.09% |
892,200
+221,000
| +33% | +$20.4M |
|
167
PUT
Freeport-McMoran
FCX
$89.9B
| $90.3M | 0.09% |
2,165,000
+607,000
| +39% | +$23.1M |
|
168
PUT
American Airlines Group
AAL
$10.1B
| $89.7M | 0.09% |
4,994,000
+1,134,900
| +29% | +$21.8M |
|
169
CALL
iShares MSCI Australia ETF
EWA
$1.34B
| $88.6M | 0.09% |
2,795,300
-273,600
| -9% | -$6.97M |
|
|
170
CALL
Carnival Corporation Ltd
CCL
$35.8B
| $88.3M | 0.09% |
4,388,800
+2,800,600
| +176% | +$59.9M |
|
171
CALL
ExxonMobil
XOM
$629B
| $88.2M | 0.09% |
1,441,800
-205,300
| -12% | -$12.8M |
|
172
CALL
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$6.07B
| $87.6M | 0.09% |
1,168,300
+72,600
| +7% | +$2.22M |
|
173
CALL
Snowflake
SNOW
$94.2B
| $86.9M | 0.09% |
256,600
-147,500
| -37% | -$51.4M |
|
174
CALL
Morgan Stanley
MS
$340B
| $86.7M | 0.09% |
882,900
-146,500
| -14% | -$14.6M |
|
175
PUT
Lam Research
LRCX
$403B
| $85.2M | 0.09% |
1,185,000
-547,000
| -32% | -$34.3M |
|
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.