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 | |
|---|---|---|---|---|---|---|
|
VRAY
3976
CALL
DELISTED
ViewRay, Inc.
VRAY
| $221K | ﹤0.01% |
632
+220
| +53% | +$612 |
|
|
OTIC
3977
CALL
DELISTED
Otonomy, Inc.
OTIC
| $221K | ﹤0.01% |
546
+543
| +18,100% | +$2.05K |
|
3978
PUT
Autohome
ATHM
$2.65B
| $220K | ﹤0.01% |
23
+1
| +5% | +$87 |
|
3979
PUT
Cemex
CX
$17.3B
| $220K | ﹤0.01% |
580
-1,386
| -70% | -$4.53K |
|
3980
Repay Holdings
RPAY
$344M
| $220K | ﹤0.01% |
9,393
+474
| +5% | +$11.5K |
|
3981
CALL
Worthington Enterprises
WOR
$2.82B
| $220K | ﹤0.01% |
88
+69
| +363% | +$1.68K |
|
|
BECN
3982
PUT
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $220K | ﹤0.01% |
71
-52
| -42% | -$1.57K |
|
|
NUAN
3983
PUT
DELISTED
Nuance Communications, Inc.
NUAN
| $220K | ﹤0.01% |
182
-292
| -62% | -$8.47K |
|
3984
Coty
COTY
$2.45B
| $219K | ﹤0.01% |
81,398
+52,264
| +179% | +$197K |
|
3985
PUT
Cheniere Energy
CQP
$31B
| $219K | ﹤0.01% |
66
-128
| -66% | -$4.51K |
|
3986
PUT
Pentair
PNR
$10.8B
| $219K | ﹤0.01% |
48
-2
| -4% | -$87 |
|
3987
CALL
Q2 Holdings
QTWO
$3.71B
| $219K | ﹤0.01% |
24
-6
| -20% | -$560 |
|
|
WFH
3988
DELISTED
Direxion Work From Home ETF
WFH
| $219K | ﹤0.01% |
+4,073
| New | +$218K |
|
3989
PUT
Q32 Bio
QTTB
$467M
| $219K | ﹤0.01% |
11
| – | – |
|
3990
PUT
Amcor
AMCR
$21.6B
| $218K | ﹤0.01% |
40
| – | – |
|
3991
CALL
A10 Networks
ATEN
$2.25B
| $218K | ﹤0.01% |
343
+322
| +1,533% | +$2.47K |
|
|
3992
A10 Networks
ATEN
$2.25B
| $218K | ﹤0.01% |
34,238
+31,825
| +1,319% | +$244K |
|
3993
Baxter International
BAX
$12.6B
| $218K | ﹤0.01% |
2,720
-12,731
| -82% | -$1.07M |
|
3994
BGC Group
BGC
$5.73B
| $218K | ﹤0.01% |
91,027
+19,284
| +27% | +$50.3K |
|
3995
CALL
DHT Holdings
DHT
$2.99B
| $218K | ﹤0.01% |
423
-4,831
| -92% | -$26.7K |
|
3996
CALL
Dolby
DLB
$4.97B
| $218K | ﹤0.01% |
33
-215
| -87% | -$14.6K |
|
3997
CALL
Helix Energy Solutions
HLX
$1.35B
| $218K | ﹤0.01% |
906
+187
| +26% | +$682 |
|
3998
VanEck High Yield Muni ETF
HYD
$4.45B
| $218K | ﹤0.01% |
3,646
+3,443
| +1,696% | +$206K |
|
3999
PUT
Ironwood Pharmaceuticals
IRWD
$626M
| $218K | ﹤0.01% |
243
-507
| -68% | -$5.04K |
|
4000
Talos Energy
TALO
$2.28B
| $218K | ﹤0.01% |
33,933
+23,591
| +228% | +$173K |
|
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.