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 | |
|---|---|---|---|---|---|---|
3001
CALL
Brown & Brown
BRO
$22.9B
| $497K | ﹤0.01% |
110
-542
| -83% | -$24.2K |
|
3002
PUT
Casey's General Stores
CASY
$31.9B
| $497K | ﹤0.01% |
28
-48
| -63% | -$8.11K |
|
3003
Kornit Digital
KRNT
$706M
| $497K | ﹤0.01% |
7,664
+1,860
| +32% | +$107K |
|
3004
CALL
KRONOS Worldwide
KRO
$761M
| $497K | ﹤0.01% |
387
+365
| +1,659% | +$4.37K |
|
3005
PUT
Huntington Bancshares
HBAN
$35.1B
| $496K | ﹤0.01% |
541
+68
| +14% | +$633 |
|
3006
Zimmer Biomet
ZBH
$17.7B
| $496K | ﹤0.01% |
+3,756
| New | +$491K |
|
3007
PUT
Celsius Holdings
CELH
$6.93B
| $495K | ﹤0.01% |
+654
| New | +$3.95K |
|
3008
Carlyle Group
CG
$16.3B
| $495K | ﹤0.01% |
20,083
+12,021
| +149% | +$324K |
|
|
EVOK
3009
CALL
DELISTED
Evoke Pharma
EVOK
| $495K | ﹤0.01% |
+7
| New | +$4.46K |
|
|
IPG
3010
PUT
DELISTED
Interpublic Group of Companies
IPG
| $495K | ﹤0.01% |
297
-17
| -5% | -$303 |
|
3011
PUT
Corbus Pharmaceuticals
CRBP
$170M
| $494K | ﹤0.01% |
92
+22
| +31% | +$3.98K |
|
3012
CALL
La-Z-Boy
LZB
$1.59B
| $493K | ﹤0.01% |
156
+111
| +247% | +$3.37K |
|
|
ARCH
3013
DELISTED
Arch Resources, Inc.
ARCH
| $493K | ﹤0.01% |
11,616
-5,340
| -31% | -$190K |
|
|
FLG
3014
CALL
Flagstar Bank National Association
FLG
$5.77B
| $492K | ﹤0.01% |
198
-12
| -6% | -$343 |
|
|
WLL
3015
PUT
DELISTED
Whiting Petroleum Corporation
WLL
| $492K | ﹤0.01% |
1,963
+1,935
| +6,911% | +$108K |
|
3016
CALL
Invesco DB Base Metals Fund
DBB
$306M
| $491K | ﹤0.01% |
383
+14
| +4% | +$209 |
|
3017
CALL
Trimble
TRMB
$12.3B
| $491K | ﹤0.01% |
101
-171
| -63% | -$8.17K |
|
3018
PUT
NCR Voyix
VYX
$1.06B
| $491K | ﹤0.01% |
362
-844
| -70% | -$10K |
|
3019
PUT
Barclays
BCS
$94.1B
| $490K | ﹤0.01% |
980
-427
| -30% | -$2.36K |
|
3020
Jack Henry & Associates
JKHY
$10.7B
| $489K | ﹤0.01% |
3,010
+1,703
| +130% | +$296K |
|
|
MRSN
3021
CALL
DELISTED
Mersana Therapeutics
MRSN
| $489K | ﹤0.01% |
+11
| New | +$5.56K |
|
3022
Impinj
PI
$3.89B
| $489K | ﹤0.01% |
18,578
+13,743
| +284% | +$363K |
|
|
SAND
3023
PUT
DELISTED
Sandstorm Gold
SAND
| $489K | ﹤0.01% |
580
-171
| -23% | -$1.58K |
|
3024
PUT
UDR
UDR
$12.9B
| $489K | ﹤0.01% |
150
+122
| +436% | +$4.28K |
|
|
MTOR
3025
PUT
DELISTED
MERITOR, Inc.
MTOR
| $489K | ﹤0.01% |
234
+193
| +471% | +$4.34K |
|
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.