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 | |
|---|---|---|---|---|---|---|
6026
ArcBest
ARCB
$3.13B
| $31K | ﹤0.01% |
1,019
-1,179
| -54% | -$36.7K |
|
6027
CALL
Altisource Portfolio Solutions
ASPS
$59M
| $31K | ﹤0.01% |
3
-5
| -63% | -$485 |
|
6028
Alphatec Holdings
ATEC
$1.45B
| $31K | ﹤0.01% |
+4,810
| New | +$27.1K |
|
|
AZEK
6029
CALL
DELISTED
The AZEK Co
AZEK
| $31K | ﹤0.01% |
+9
| New | +$314 |
|
6030
CALL
Boise Cascade
BCC
$2.77B
| $31K | ﹤0.01% |
8
-2
| -20% | -$87 |
|
6031
PUT
Brown & Brown
BRO
$25B
| $31K | ﹤0.01% |
7
-64
| -90% | -$2.85K |
|
6032
CALL
Black Stone Minerals
BSM
$3.14B
| $31K | ﹤0.01% |
52
+26
| +100% | +$173 |
|
6033
BlueLinx
BXC
$440M
| $31K | ﹤0.01% |
+1,470
| New | +$23.7K |
|
6034
PUT
Century Casinos
CNTY
$32.6M
| $31K | ﹤0.01% |
57
-59
| -51% | -$304 |
|
6035
CALL
Fate Therapeutics
FATE
$276M
| $31K | ﹤0.01% |
8
-319
| -98% | -$11.1K |
|
6036
Liberty Media Series A
FWONA
$23.4B
| $31K | ﹤0.01% |
992
-1,348
| -58% | -$43.7K |
|
6037
PUT
GATX Corp
GATX
$6.49B
| $31K | ﹤0.01% |
5
-14
| -74% | -$891 |
|
6038
CALL
Lipocine
LPCN
$17.1M
| $31K | ﹤0.01% |
13
-37
| -74% | -$983 |
|
6039
Quanex
NX
$845M
| $31K | ﹤0.01% |
1,729
+1,361
| +370% | +$21.6K |
|
|
OGI
6040
Organigram Holdings
OGI
$131M
| $31K | ﹤0.01% |
7,461
+3,180
| +74% | +$16.6K |
|
|
OPI
6041
PUT
DELISTED
Office Properties Income Trust
OPI
| $31K | ﹤0.01% |
15
-167
| -92% | -$4.02K |
|
|
RC
6042
CALL
Ready Capital
RC
$265M
| $31K | ﹤0.01% |
28
-14
| -33% | -$133 |
|
6043
PUT
Siebert Financial
SIEB
$67.1M
| $31K | ﹤0.01% |
99
-5
| -5% | -$20 |
|
6044
Super Micro Computer
SMCI
$17.6B
| $31K | ﹤0.01% |
12,040
+6,360
| +112% | +$17.4K |
|
|
TBI
6045
Trueblue
TBI
$231M
| $31K | ﹤0.01% |
2,015
+470
| +30% | +$7.25K |
|
6046
CALL
TRX Gold Corp
TRX
$259M
| $31K | ﹤0.01% |
+455
| New | +$394 |
|
6047
PUT
Viavi Solutions
VIAV
$8.14B
| $31K | ﹤0.01% |
27
+5
| +23% | +$65 |
|
6048
Wave Life Sciences
WVE
$1.11B
| $31K | ﹤0.01% |
3,714
-20,066
| -84% | -$220K |
|
|
XNET
6049
PUT
Xunlei
XNET
$340M
| $31K | ﹤0.01% |
92
+12
| +15% | +$44 |
|
|
VOXX
6050
PUT
DELISTED
VOXX International Corporation Class A
VOXX
| $31K | ﹤0.01% |
41
-311
| -88% | -$2.07K |
|
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.