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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1976
PUT
Williams Companies
WMB
$90.5B
| $1.25M | ﹤0.01% |
639
-297
| -32% | -$6.05K |
|
1977
PUT
Deckers Outdoor
DECK
$13.3B
| $1.25M | ﹤0.01% |
342
-198
| -37% | -$6.85K |
|
1978
CALL
Vipshop
VIPS
$6.84B
| $1.25M | ﹤0.01% |
802
-124
| -13% | -$2.43K |
|
|
HBI
1979
PUT
DELISTED
Hanesbrands
HBI
| $1.25M | ﹤0.01% |
796
+77
| +11% | +$1.13K |
|
1980
TG Therapeutics
TGTX
$8.58B
| $1.25M | ﹤0.01% |
46,821
+24,687
| +112% | +$568K |
|
1981
Alaska Air
ALK
$5.15B
| $1.25M | ﹤0.01% |
34,138
+29,615
| +655% | +$1.11M |
|
|
CLDR
1982
DELISTED
Cloudera, Inc.
CLDR
| $1.25M | ﹤0.01% |
114,743
+29,219
| +34% | +$339K |
|
1983
CALL
Leidos
LDOS
$14.1B
| $1.25M | ﹤0.01% |
140
-18
| -11% | -$1.63K |
|
1984
PUT
MSCI
MSCI
$40B
| $1.25M | ﹤0.01% |
35
-255
| -88% | -$92.6K |
|
1985
PUT
US Foods
USFD
$21.4B
| $1.25M | ﹤0.01% |
562
-859
| -60% | -$19.3K |
|
|
CSOD
1986
CALL
DELISTED
Cornerstone OnDemand, Inc.
CSOD
| $1.24M | ﹤0.01% |
342
+168
| +97% | +$6.04K |
|
1987
CALL
Kura Oncology
KURA
$922M
| $1.24M | ﹤0.01% |
405
-181
| -31% | -$4K |
|
1988
PUT
Brighthouse Financial
BHF
$3.63B
| $1.24M | ﹤0.01% |
460
+231
| +101% | +$6.71K |
|
1989
CALL
Zebra Technologies
ZBRA
$12.4B
| $1.24M | ﹤0.01% |
49
+7
| +17% | +$1.88K |
|
|
BFX
1990
CALL
DELISTED
BowFlex Inc.
BFX
| $1.24M | ﹤0.01% |
721
+551
| +324% | +$7.06K |
|
1991
PUT
Alkermes
ALKS
$8.82B
| $1.24M | ﹤0.01% |
746
+14
| +2% | +$254 |
|
1992
CALL
Cognex
CGNX
$10.3B
| $1.24M | ﹤0.01% |
190
+66
| +53% | +$4.26K |
|
1993
CALL
Utz Brands
UTZ
$1.25B
| $1.23M | ﹤0.01% |
+689
| New | +$10.5K |
|
|
LNW
1994
CALL
DELISTED
Light & Wonder
LNW
| $1.23M | ﹤0.01% |
353
-92
| -21% | -$1.97K |
|
1995
CALL
Viking Therapeutics
VKTX
$4.04B
| $1.23M | ﹤0.01% |
2,117
-231
| -10% | -$1.59K |
|
|
MNDT
1996
CALL
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $1.23M | ﹤0.01% |
998
-332
| -25% | -$4.54K |
|
|
CRON
1997
PUT
Cronos Group
CRON
$1.05B
| $1.23M | ﹤0.01% |
2,458
+89
| +4% | +$521 |
|
|
MNDT
1998
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $1.23M | ﹤0.01% |
99,717
-38,173
| -28% | -$523K |
|
1999
PUT
Kimco Realty
KIM
$17.6B
| $1.23M | ﹤0.01% |
1,093
+720
| +193% | +$8.5K |
|
2000
PUT
Park Hotels & Resorts
PK
$2.97B
| $1.23M | ﹤0.01% |
1,231
-135
| -10% | -$1.28K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.