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 | |
|---|---|---|---|---|---|---|
|
FSR
801
CALL
DELISTED
Fisker Inc.
FSR
| $6.66M | 0.01% |
4,544
+2,543
| +127% | +$37.4K |
|
802
PUT
Stryker
SYK
$120B
| $6.64M | 0.01% |
271
-31
| -10% | -$7.02K |
|
803
PUT
Southern Company
SO
$108B
| $6.63M | 0.01% |
1,079
-147
| -12% | -$8.84K |
|
804
PUT
Franco-Nevada
FNV
$41.4B
| $6.6M | 0.01% |
527
+131
| +33% | +$17.7K |
|
805
PUT
Sysco
SYY
$38.8B
| $6.59M | 0.01% |
888
+110
| +14% | +$7.56K |
|
|
SPWR
806
PUT
DELISTED
SunPower Corporation Common Stock
SPWR
| $6.56M | 0.01% |
2,593
+2,317
| +839% | +$46.9K |
|
807
PUT
Synchrony
SYF
$23.1B
| $6.56M | 0.01% |
1,889
-259
| -12% | -$7.79K |
|
|
SHNY
808
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $6.54M | 0.01% |
8,190
-6,559
| -44% | -$5.24M |
|
809
PUT
Chubb
CB
$136B
| $6.51M | 0.01% |
423
-110
| -21% | -$15.4K |
|
810
PUT
Devon Energy
DVN
$52.4B
| $6.5M | 0.01% |
4,114
-351
| -8% | -$4.35K |
|
811
CALL
STMicroelectronics
STM
$48.9B
| $6.5M | 0.01% |
1,752
-1,746
| -50% | -$61.9K |
|
812
CALL
Dominion Energy
D
$62.6B
| $6.48M | 0.01% |
862
-473
| -35% | -$37.6K |
|
813
CALL
O'Reilly Automotive
ORLY
$71.2B
| $6.47M | 0.01% |
2,145
+1,440
| +204% | +$43.5K |
|
814
CALL
Vanguard FTSE Europe ETF
VGK
$29.8B
| $6.47M | 0.01% |
1,184
-652
| -36% | -$36.7K |
|
815
Intel
INTC
$507B
| $6.46M | 0.01% |
129,598
+75,544
| +140% | +$3.69M |
|
816
CALL
Eaton
ETN
$161B
| $6.45M | 0.01% |
537
-166
| -24% | -$18.8K |
|
817
CALL
Virgin Galactic
SPCE
$334M
| $6.44M | 0.01% |
136
-159
| -54% | -$74.3K |
|
|
SIVB
818
PUT
DELISTED
SVB Financial Group
SIVB
| $6.4M | 0.01% |
165
+58
| +54% | +$18.8K |
|
819
PUT
Wolfspeed
WOLF
$1.37B
| $6.38M | 0.01% |
603
+186
| +45% | +$14.9K |
|
|
BHVN
820
PUT
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
| $6.38M | 0.01% |
745
+657
| +747% | +$55.7K |
|
|
JKS
821
CALL
JinkoSolar
JKS
$837M
| $6.38M | 0.01% |
1,031
+16
| +2% | +$1.01K |
|
822
PUT
Fortinet
FTNT
$111B
| $6.37M | 0.01% |
2,145
-45
| -2% | -$1.14K |
|
823
CALL
Magna International
MGA
$17.7B
| $6.36M | 0.01% |
899
+664
| +283% | +$39.1K |
|
824
PUT
Lear
LEA
$7.09B
| $6.34M | 0.01% |
399
+371
| +1,325% | +$52.2K |
|
825
CALL
Elastic
ESTC
$5.94B
| $6.34M | 0.01% |
434
-83
| -16% | -$10.2K |
|
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.