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 | Miscellaneous | 97.43% |
| 2 | Technology | 0.63% |
| 3 | Consumer Discretionary | 0.43% |
| 4 | Healthcare | 0.36% |
| 5 | Communication Services | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
176
PUT
MongoDB
MDB
$29.7B
| $84.6M | 0.09% |
159,800
+113,300
| +244% | +$58M |
|
177
PUT
Novavax
NVAX
$1.69B
| $83.7M | 0.08% |
585,000
+198,400
| +51% | +$34.1M |
|
178
PUT
Chevron
CVX
$409B
| $83.2M | 0.08% |
708,900
-8,700
| -1% | -$988K |
|
179
PUT
Teladoc Health
TDOC
$1.14B
| $82.8M | 0.08% |
902,200
+380,400
| +73% | +$45.5M |
|
180
CALL
AbbVie
ABBV
$453B
| $82.8M | 0.08% |
611,500
+44,700
| +8% | +$5.28M |
|
181
PUT
Johnson & Johnson
JNJ
$663B
| $82.8M | 0.08% |
483,800
-193,500
| -29% | -$31.7M |
|
182
CALL
Freeport-McMoran
FCX
$104B
| $82.7M | 0.08% |
1,981,400
+743,100
| +60% | +$28.2M |
|
183
PUT
Lockheed Martin
LMT
$121B
| $81.8M | 0.08% |
230,200
+110,600
| +92% | +$38.3M |
|
184
PUT
Direxion Daily Technology Bull 3x ETF
TECL
$5.92B
| $81.8M | 0.08% |
1,179,500
+291,500
| +33% | +$21.9M |
|
185
CALL
CVS Health
CVS
$124B
| $81.7M | 0.08% |
791,800
+116,800
| +17% | +$10.8M |
|
186
CALL
NIO
NIO
$9.52B
| $81.5M | 0.08% |
2,573,300
-822,600
| -24% | -$30.2M |
|
187
PUT
United Parcel Service
UPS
$87B
| $81.4M | 0.08% |
379,600
+136,100
| +56% | +$27.7M |
|
|
188
CALL
Teladoc Health
TDOC
$1.14B
| $80.4M | 0.08% |
875,800
+457,000
| +109% | +$54.6M |
|
|
DOCU
189
CALL
DocuSign
DOCU
$13.1B
| $80.1M | 0.08% |
526,000
+240,200
| +84% | +$54.8M |
|
|
190
CALL
GE Aerospace
GE
$350B
| $79.5M | 0.08% |
1,350,204
-674,621
| -33% | -$42.4M |
|
|
SPLK
191
CALL
DELISTED
Splunk Inc
SPLK
| $79M | 0.08% |
683,100
+15,100
| +2% | +$2.11M |
|
192
PUT
Booking.com
BKNG
$145B
| $78.5M | 0.08% |
817,500
-590,000
| -42% | -$55.9M |
|
|
193
CALL
Chevron
CVX
$409B
| $78.4M | 0.08% |
668,500
-125,300
| -16% | -$14.2M |
|
194
PUT
Domino's
DPZ
$11.3B
| $77.6M | 0.08% |
137,500
+103,200
| +301% | +$52.5M |
|
|
TWTR
195
CALL
DELISTED
Twitter, Inc.
TWTR
| $77.3M | 0.08% |
1,787,500
-197,100
| -10% | -$10.2M |
|
|
KFYP
196
CALL
DELISTED
KraneShares CICC China Leaders 100 Index ETF
KFYP
| $77.1M | 0.08% |
2,061,800
+1,489,400
| +260% | +$47.4M |
|
|
197
PUT
Verizon
VZ
$208B
| $77M | 0.08% |
1,481,000
+103,800
| +8% | +$5.42M |
|
198
CALL
Applied Materials
AMAT
$361B
| $76.8M | 0.08% |
488,100
-59,200
| -11% | -$8.58M |
|
199
PUT
Accenture
ACN
$114B
| $76.2M | 0.08% |
183,900
+59,900
| +48% | +$21.8M |
|
|
200
CALL
AMC Entertainment Holdings
AMC
$2.37B
| $75.6M | 0.08% |
278,000
-181,990
| -40% | -$64.1M |
|
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's Q4 2021 filing shows 2,268 new, 3,786 increased, 4,257 reduced and 1,643 closed positions. Its largest new stake was iShares China Large-Cap ETF: 902,666 shares worth $33M. The largest sale was AMC Entertainment Holdings, an estimated $49.5M.
By sector, the portfolio is most concentrated in Miscellaneous at 97% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- 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 2,268 new positions and closed 1,643 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.