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 | |
|---|---|---|---|---|---|---|
|
RCM
1726
CALL
DELISTED
R1 RCM Inc. Common Stock
RCM
| $1.62M | ﹤0.01% |
944
+473
| +100% | +$6.91K |
|
1727
PUT
PTC Therapeutics
PTCT
$6.37B
| $1.62M | ﹤0.01% |
346
-1
| -0.3% | -$49 |
|
1728
CALL
DXC Technology
DXC
$1.63B
| $1.61M | ﹤0.01% |
904
-102
| -10% | -$1.86K |
|
1729
PUT
Tandem Diabetes Care
TNDM
$1.17B
| $1.61M | ﹤0.01% |
142
-59
| -29% | -$6.2K |
|
1730
PUT
Eastman Chemical
EMN
$7.8B
| $1.61M | ﹤0.01% |
206
+133
| +182% | +$10K |
|
|
ACC
1731
PUT
DELISTED
American Campus Communities, Inc.
ACC
| $1.61M | ﹤0.01% |
461
+439
| +1,995% | +$15.1K |
|
1732
PUT
British American Tobacco
BTI
$132B
| $1.61M | ﹤0.01% |
445
+137
| +44% | +$4.8K |
|
1733
CALL
Nano X Imaging
NNOX
$62.4M
| $1.61M | ﹤0.01% |
+683
| New | +$22.8K |
|
1734
CALL
Haemonetics
HAE
$3.58B
| $1.6M | ﹤0.01% |
184
+105
| +133% | +$9.18K |
|
1735
Morgan Stanley
MS
$337B
| $1.6M | ﹤0.01% |
33,194
-168,315
| -84% | -$8.48M |
|
|
IPHI
1736
DELISTED
INPHI CORPORATION
IPHI
| $1.6M | ﹤0.01% |
14,294
+12,283
| +611% | +$1.43M |
|
|
HBI
1737
CALL
DELISTED
Hanesbrands
HBI
| $1.6M | ﹤0.01% |
1,017
-22
| -2% | -$323 |
|
|
CALY
1738
PUT
Callaway Golf Company
CALY
$3.26B
| $1.6M | ﹤0.01% |
836
+452
| +118% | +$8.49K |
|
1739
CALL
Invitation Homes
INVH
$17.7B
| $1.6M | ﹤0.01% |
571
-1,570
| -73% | -$44.8K |
|
|
SIX
1740
CALL
DELISTED
Six Flags Entertainment Corp.
SIX
| $1.59M | ﹤0.01% |
786
-428
| -35% | -$8.8K |
|
|
AMWD
1741
CALL
DELISTED
American Woodmark
AMWD
| $1.59M | ﹤0.01% |
203
+156
| +332% | +$12.7K |
|
1742
D.R. Horton
DHI
$41B
| $1.59M | ﹤0.01% |
21,085
+19,858
| +1,618% | +$1.36M |
|
1743
PUT
Cimpress
CMPR
$2.37B
| $1.59M | ﹤0.01% |
212
+40
| +23% | +$3.43K |
|
1744
CALL
Warrior Met Coal
HCC
$4.23B
| $1.59M | ﹤0.01% |
933
-193
| -17% | -$3.13K |
|
|
ODP
1745
CALL
DELISTED
ODP
ODP
| $1.59M | ﹤0.01% |
819
+736
| +887% | +$15.7K |
|
1746
PUT
Winnebago Industries
WGO
$870M
| $1.59M | ﹤0.01% |
308
-400
| -56% | -$23K |
|
1747
CALL
AES
AES
$10.6B
| $1.59M | ﹤0.01% |
877
+616
| +236% | +$10.3K |
|
|
TWOU
1748
PUT
DELISTED
2U Inc
TWOU
| $1.59M | ﹤0.01% |
16
+13
| +433% | +$15.5K |
|
|
DISCK
1749
PUT
DELISTED
Discovery, Inc. Series C Common Stock
DISCK
| $1.59M | ﹤0.01% |
731
-443
| -38% | -$8.75K |
|
1750
PUT
JetBlue
JBLU
$1.96B
| $1.58M | ﹤0.01% |
1,398
-2,024
| -59% | -$22.7K |
|
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.