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 |
Alibaba
BABA
|
+$39.9M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$39M |
| 3 |
Mastercard
MA
|
+$31.3M |
| 4 |
Apple
AAPL
|
+$25.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$25.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
JPMorgan Chase
JPM
|
+$52.8M |
| 2 |
TSMC
TSM
|
+$43M |
| 3 |
Amazon
AMZN
|
+$24.7M |
| 4 |
iShares Silver Trust
SLV
|
+$24.2M |
| 5 |
Netflix
NFLX
|
+$21.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.65% |
| 2 | Technology | 0.37% |
| 3 | Healthcare | 0.33% |
| 4 | Industrials | 0.21% |
| 5 | Communication Services | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
176
PUT
Delta Air Lines
DAL
$55.7B
| $48M | 0.06% |
11,930
-3,699
| -24% | -$135K |
|
177
PUT
Marriott International
MAR
$97B
| $47.9M | 0.06% |
3,632
-825
| -19% | -$94.2K |
|
178
PUT
ARK Blockchain & Fintech Innovation ETF
ARKF
$764M
| $46.6M | 0.06% |
4,206
+3,642
| +646% | +$164K |
|
179
PUT
Morgan Stanley
MS
$340B
| $46.6M | 0.06% |
6,804
-83
| -1% | -$4.76K |
|
180
PUT
Chevron
CVX
$381B
| $45.9M | 0.06% |
5,432
-2,238
| -29% | -$181K |
|
181
CALL
Comcast
CMCSA
$85.1B
| $45.6M | 0.06% |
8,711
-442
| -5% | -$21.2K |
|
182
CALL
Carnival Corporation Ltd
CCL
$35.8B
| $45.6M | 0.06% |
21,034
+2,166
| +11% | +$38.5K |
|
183
PUT
Lockheed Martin
LMT
$117B
| $45.5M | 0.06% |
1,282
+125
| +11% | +$46K |
|
|
184
CALL
Delta Air Lines
DAL
$55.7B
| $45.5M | 0.06% |
11,311
-5,487
| -33% | -$200K |
|
185
PUT
Wayfair
W
$11.2B
| $45.4M | 0.06% |
2,009
-172
| -8% | -$45.7K |
|
186
PUT
lululemon athletica
LULU
$13.2B
| $44.9M | 0.06% |
1,291
+202
| +19% | +$70.1K |
|
|
UCD
187
CALL
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $44.9M | 0.06% |
22,659
-1,838
| -8% | -$3.64M |
|
188
PUT
Simon Property Group
SPG
$74B
| $44.9M | 0.06% |
5,262
+1,992
| +61% | +$152K |
|
189
CALL
Moderna
MRNA
$23.7B
| $44.7M | 0.06% |
+4,278
| New | +$433K |
|
190
CALL
Intuitive Surgical
ISRG
$124B
| $44.6M | 0.06% |
1,635
-93
| -5% | -$23.1K |
|
191
PUT
VanEck Durable High Dividend ETF
DURA
$38.1M
| $44.5M | 0.06% |
2,943
+647
| +28% | +$18K |
|
192
CALL
Teladoc Health
TDOC
$1.75B
| $44.4M | 0.06% |
2,220
+740
| +50% | +$150K |
|
193
PUT
United Airlines
UAL
$38.2B
| $44.2M | 0.06% |
10,215
+2,353
| +30% | +$95.2K |
|
|
JJT
194
PUT
DELISTED
iPath Series B Bloomberg Tin Subindex Total ReturnSM ETN
JJT
| $43.8M | 0.06% |
25,854
-9,054
| -26% | -$444K |
|
195
PUT
Accenture
ACN
$86.2B
| $43.8M | 0.06% |
1,676
+515
| +44% | +$123K |
|
196
PUT
Deere & Co
DE
$158B
| $43.4M | 0.06% |
1,614
+365
| +29% | +$90.7K |
|
|
197
CALL
ARK Blockchain & Fintech Innovation ETF
ARKF
$764M
| $43.3M | 0.06% |
4,330
+3,704
| +592% | +$167K |
|
198
CALL
Vanguard S&P 500 ETF
VOO
$981B
| $42.7M | 0.06% |
2,639
-235
| -8% | -$76.6K |
|
199
CALL
Royal Caribbean
RCL
$77.2B
| $42.4M | 0.05% |
5,678
-1,007
| -15% | -$70.2K |
|
200
CALL
Pinterest
PINS
$12.8B
| $41.3M | 0.05% |
6,260
-1,562
| -20% | -$93.7K |
|
Similar funds
Simplex Trading's Q4 2020 Portfolio in Review
As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading's Q4 2020 filing shows 1,711 new, 3,402 increased, 3,106 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
- Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
- Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
- Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
- Simplex Trading opened 1,711 new positions and closed 1,157 in Q4 2020.
- Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.
Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.