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 | |
|---|---|---|---|---|---|---|
851
PUT
GoDaddy
GDDY
$11.6B
| $6.02M | 0.01% |
726
+593
| +446% | +$46.6K |
|
852
PUT
ALPS REIT Dividend Dogs ETF
RDOG
$11.4M
| $6.02M | 0.01% |
2,325
+705
| +44% | +$27K |
|
853
CALL
Medtronic
MDT
$105B
| $6.01M | 0.01% |
513
-2,941
| -85% | -$324K |
|
854
CALL
Amplify Junior Silver Miners ETF
SILJ
$3.28B
| $5.98M | 0.01% |
3,399
+800
| +31% | +$11.7K |
|
|
PSTH
855
DELISTED
Pershing Square Tontine Holdings, Ltd.
PSTH
| $5.97M | 0.01% |
215,481
+158,260
| +277% | +$3.82M |
|
856
CALL
BHP
BHP
$212B
| $5.97M | 0.01% |
1,025
-133
| -11% | -$6.67K |
|
857
PUT
Pultegroup
PHM
$23.7B
| $5.97M | 0.01% |
1,385
+31
| +2% | +$1.37K |
|
858
CALL
Exelon
EXC
$48.4B
| $5.97M | 0.01% |
1,982
-2,227
| -53% | -$65.7K |
|
859
CALL
Travelers Companies
TRV
$78.5B
| $5.96M | 0.01% |
425
-268
| -39% | -$34.4K |
|
860
State Street Industrial Select Sector SPDR ETF
XLI
$33.7B
| $5.96M | 0.01% |
67,317
-41,209
| -38% | -$3.47M |
|
861
PUT
ProShares UltraShort Health Care
RXD
$3.3M
| $5.95M | 0.01% |
1,132
-449
| -28% | -$18.9K |
|
862
Moderna
MRNA
$22.6B
| $5.95M | 0.01% |
56,919
-96,909
| -63% | -$9.8M |
|
|
AYX
863
PUT
DELISTED
Alteryx Inc
AYX
| $5.93M | 0.01% |
487
-252
| -34% | -$31.8K |
|
864
CALL
Cencora
COR
$59.4B
| $5.92M | 0.01% |
606
+82
| +16% | +$8.2K |
|
865
PUT
HSBC
HSBC
$349B
| $5.92M | 0.01% |
2,286
-3,049
| -57% | -$72.4K |
|
866
PUT
Mondelez International
MDLZ
$77.1B
| $5.92M | 0.01% |
1,013
-476
| -32% | -$27.2K |
|
867
CALL
Cameco
CCJ
$38.9B
| $5.92M | 0.01% |
4,416
+1,760
| +66% | +$18.8K |
|
868
PUT
PVH
PVH
$3.59B
| $5.92M | 0.01% |
630
-52
| -8% | -$3.96K |
|
|
PPL
869
CALL
PPL Corp
PPL
$27.3B
| $5.91M | 0.01% |
2,096
+369
| +21% | +$10.5K |
|
870
PUT
Teva Pharmaceuticals
TEVA
$36.3B
| $5.91M | 0.01% |
6,124
-2,424
| -28% | -$23.2K |
|
871
CALL
XPO
XPO
$25.1B
| $5.9M | 0.01% |
1,431
-1,695
| -54% | -$61.4K |
|
872
PUT
Digital Turbine
APPS
$971M
| $5.9M | 0.01% |
1,043
+226
| +28% | +$9.27K |
|
|
WBA
873
DELISTED
Walgreens Boots Alliance
WBA
| $5.9M | 0.01% |
147,937
+13,907
| +10% | +$539K |
|
874
CALL
Restaurant Brands International
QSR
$25.1B
| $5.9M | 0.01% |
965
+155
| +19% | +$9.05K |
|
|
SAVE
875
CALL
DELISTED
Spirit Airlines, Inc.
SAVE
| $5.89M | 0.01% |
2,410
+953
| +65% | +$19.7K |
|
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.