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 | |
|---|---|---|---|---|---|---|
1926
Vodafone
VOD
$34.9B
| $1.73M | ﹤0.01% |
+104,764
| New | +$1.64M |
|
1927
PUT
Starwood Property Trust
STWD
$6.12B
| $1.72M | ﹤0.01% |
893
+340
| +61% | +$5.79K |
|
|
FSR
1928
DELISTED
Fisker Inc.
FSR
| $1.72M | ﹤0.01% |
117,650
+59,684
| +103% | +$877K |
|
1929
Trip.com Group
TCOM
$27.5B
| $1.72M | ﹤0.01% |
50,986
+12,491
| +32% | +$407K |
|
1930
CALL
UDR
UDR
$12.9B
| $1.72M | ﹤0.01% |
447
-16
| -3% | -$584 |
|
1931
Carvana
CVNA
$43.3B
| $1.71M | ﹤0.01% |
35,790
-87,970
| -71% | -$4.02M |
|
1932
PUT
Perion Network
PERI
$367M
| $1.71M | ﹤0.01% |
1,345
+594
| +79% | +$5.25K |
|
1933
CALL
Bloomin' Brands
BLMN
$680M
| $1.71M | ﹤0.01% |
881
-179
| -17% | -$3.05K |
|
|
CMA
1934
CALL
DELISTED
Comerica
CMA
| $1.71M | ﹤0.01% |
306
+195
| +176% | +$9.51K |
|
1935
CALL
Rithm Capital
RITM
$5.09B
| $1.71M | ﹤0.01% |
1,718
+209
| +14% | +$1.85K |
|
1936
CALL
KB Home
KBH
$3.48B
| $1.71M | ﹤0.01% |
509
+146
| +40% | +$5.24K |
|
1937
PUT
HubSpot
HUBS
$10.5B
| $1.7M | ﹤0.01% |
43
-72
| -63% | -$25.3K |
|
|
SBNY
1938
CALL
DELISTED
Signature Bank
SBNY
| $1.7M | ﹤0.01% |
126
+96
| +320% | +$10K |
|
1939
Equity Residential
EQR
$25.4B
| $1.7M | ﹤0.01% |
28,742
-28,711
| -50% | -$1.62M |
|
1940
CALL
FS KKR Capital
FSK
$2.98B
| $1.7M | ﹤0.01% |
1,026
+484
| +89% | +$8.04K |
|
1941
Carnival Corporation Ltd
CCL
$36.1B
| $1.7M | ﹤0.01% |
78,407
-167,824
| -68% | -$2.98M |
|
1942
Halliburton
HAL
$27.9B
| $1.7M | ﹤0.01% |
89,761
-98,705
| -52% | -$1.53M |
|
1943
CALL
Purple Innovation
PRPL
$33.2M
| $1.7M | ﹤0.01% |
21
-11
| -34% | -$8.02K |
|
1944
Sysco
SYY
$39.7B
| $1.7M | ﹤0.01% |
+22,852
| New | +$1.57M |
|
|
CLR
1945
CALL
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $1.69M | ﹤0.01% |
1,039
+458
| +79% | +$6.85K |
|
1946
Nucor
NUE
$56.4B
| $1.69M | ﹤0.01% |
31,807
+23,968
| +306% | +$1.24M |
|
|
DENT
1947
CALL
DELISTED
AdvisorShares Dent Tactical ETF
DENT
| $1.69M | ﹤0.01% |
759
+670
| +753% | +$1.49M |
|
1948
Digital Turbine
APPS
$1.02B
| $1.69M | ﹤0.01% |
29,844
+17,230
| +137% | +$707K |
|
1949
Arvinas
ARVN
$518M
| $1.69M | ﹤0.01% |
19,871
+15,865
| +396% | +$547K |
|
1950
CALL
Polaris
PII
$4.15B
| $1.69M | ﹤0.01% |
177
+51
| +40% | +$4.88K |
|
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.