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 | |
|---|---|---|---|---|---|---|
201
PUT
UnitedHealth
UNH
$396B
| $41M | 0.05% |
1,168
-37
| -3% | -$12.4K |
|
202
CALL
American Express
AXP
$238B
| $40.8M | 0.05% |
3,376
-19
| -0.6% | -$2.1K |
|
203
CALL
Verizon
VZ
$188B
| $40.7M | 0.05% |
6,935
+795
| +13% | +$47.2K |
|
|
JJT
204
CALL
DELISTED
iPath Series B Bloomberg Tin Subindex Total ReturnSM ETN
JJT
| $40.7M | 0.05% |
23,942
-3,810
| -14% | -$187K |
|
205
PUT
Intuitive Surgical
ISRG
$125B
| $40.6M | 0.05% |
1,488
+552
| +59% | +$137K |
|
206
PUT
General Motors
GM
$71.7B
| $39.9M | 0.05% |
9,578
+1,505
| +19% | +$58.5K |
|
207
PUT
Fastly Inc
FSLY
$3.24B
| $39.7M | 0.05% |
4,546
+839
| +23% | +$74K |
|
|
208
CALL
General Motors
GM
$71.7B
| $39.5M | 0.05% |
9,477
+1,849
| +24% | +$71.9K |
|
209
CALL
DraftKings
DKNG
$11.8B
| $39.5M | 0.05% |
8,475
+1,576
| +23% | +$75K |
|
210
CALL
Freeport-McMoran
FCX
$89.9B
| $39.4M | 0.05% |
15,123
+9,800
| +184% | +$204K |
|
211
PUT
Novavax
NVAX
$1.33B
| $39M | 0.05% |
3,495
-1,048
| -23% | -$111K |
|
212
PUT
Bristol-Myers Squibb
BMY
$125B
| $39M | 0.05% |
6,282
-2,017
| -24% | -$124K |
|
213
CALL
AbbVie
ABBV
$452B
| $38.8M | 0.05% |
3,618
-593
| -14% | -$57K |
|
214
CALL
lululemon athletica
LULU
$13.2B
| $38.4M | 0.05% |
1,103
-575
| -34% | -$200K |
|
215
PUT
PENN Entertainment
PENN
$2.86B
| $38.2M | 0.05% |
4,422
-531
| -11% | -$37.9K |
|
|
216
Alphabet (Google) Class C
GOOG
$4.22T
| $38.1M | 0.05% |
434,640
+297,380
| +217% | +$25.1M |
|
217
CALL
Trade Desk
TTD
$8.58B
| $37.8M | 0.05% |
4,720
-1,290
| -21% | -$97.4K |
|
218
CALL
Honeywell
HON
$72.8B
| $37.7M | 0.05% |
1,882
+821
| +77% | +$149K |
|
219
PUT
Spotify
SPOT
$101B
| $37.7M | 0.05% |
1,198
-243
| -17% | -$68.6K |
|
220
PUT
Enphase Energy
ENPH
$5.19B
| $37.3M | 0.05% |
2,126
-481
| -18% | -$61K |
|
221
PUT
Electronic Arts
EA
$52.4B
| $37.2M | 0.05% |
2,588
+289
| +13% | +$37.3K |
|
|
222
PUT
Verizon
VZ
$188B
| $36.9M | 0.05% |
6,283
-2,045
| -25% | -$121K |
|
223
CALL
Marriott International
MAR
$97B
| $36.9M | 0.05% |
2,795
-1,428
| -34% | -$163K |
|
224
PUT
Direxion Daily Technology Bull 3x ETF
TECL
$5.6B
| $36.7M | 0.05% |
42,280
-6,370
| -13% | -$216K |
|
225
CALL
Lockheed Martin
LMT
$117B
| $36.6M | 0.05% |
1,030
+643
| +166% | +$236K |
|
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.