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 | |
|---|---|---|---|---|---|---|
|
SDC
2026
DELISTED
SmileDirectClub, Inc. Class A Common Stock
SDC
| $1.2M | ﹤0.01% |
102,551
+91,134
| +798% | +$837K |
|
2027
CALL
KBR
KBR
$4.68B
| $1.2M | ﹤0.01% |
535
+342
| +177% | +$7.93K |
|
2028
CALL
EQT Corp
EQT
$33.2B
| $1.19M | ﹤0.01% |
924
+248
| +37% | +$3.64K |
|
|
KC
2029
Kingsoft Cloud Holdings
KC
$2.84B
| $1.19M | ﹤0.01% |
+40,347
| New | +$1.38M |
|
2030
PUT
Alto Ingredients
ALTO
$360M
| $1.19M | ﹤0.01% |
+1,626
| New | +$5.63K |
|
2031
PUT
iShares Convertible Bond ETF
ICVT
$7.23B
| $1.19M | ﹤0.01% |
465
-1,942
| -81% | -$151K |
|
2032
CALL
Polaris
PII
$4.15B
| $1.19M | ﹤0.01% |
126
+88
| +232% | +$8.66K |
|
2033
PUT
Bloom Energy
BE
$52.6B
| $1.19M | ﹤0.01% |
661
+44
| +7% | +$657 |
|
2034
CALL
WillScot Mobile Mini Holdings
WSC
$4.8B
| $1.19M | ﹤0.01% |
712
+634
| +813% | +$10.1K |
|
2035
CALL
Essential Utilities
WTRG
$11.2B
| $1.19M | ﹤0.01% |
295
+51
| +21% | +$2.19K |
|
2036
PUT
Loews
L
$24.3B
| $1.18M | ﹤0.01% |
340
+271
| +393% | +$9.72K |
|
2037
PUT
SSR Mining
SSRM
$5.57B
| $1.18M | ﹤0.01% |
633
-114
| -15% | -$2.43K |
|
2038
PUT
KB Home
KBH
$3.48B
| $1.18M | ﹤0.01% |
307
-122
| -28% | -$4.26K |
|
2039
CALL
Nokia
NOK
$50.8B
| $1.18M | ﹤0.01% |
3,010
-717
| -19% | -$3.23K |
|
|
HIBB
2040
CALL
DELISTED
Hibbett, Inc. Common Stock
HIBB
| $1.18M | ﹤0.01% |
300
+261
| +669% | +$7.56K |
|
|
XEC
2041
CALL
DELISTED
CIMAREX ENERGY CO
XEC
| $1.18M | ﹤0.01% |
483
-411
| -46% | -$10.8K |
|
2042
CALL
Fidelity National Financial
FNF
$13.9B
| $1.17M | ﹤0.01% |
390
-140
| -26% | -$4.38K |
|
2043
PUT
Toronto Dominion Bank
TD
$198B
| $1.17M | ﹤0.01% |
254
-98
| -28% | -$4.56K |
|
|
K
2044
DELISTED
Kellanova
K
| $1.17M | ﹤0.01% |
+19,354
| New | +$1.23M |
|
|
DX
2045
CALL
Dynex Capital
DX
$2.99B
| $1.17M | ﹤0.01% |
770
+463
| +151% | +$7.08K |
|
|
BAND
2046
CALL
Bandwidth Inc
BAND
$1.91B
| $1.17M | ﹤0.01% |
67
+33
| +97% | +$4.89K |
|
2047
iQIYI
IQ
$1.18B
| $1.17M | ﹤0.01% |
51,790
+1,139
| +2% | +$24.9K |
|
2048
PUT
Sasol
SSL
$7.58B
| $1.17M | ﹤0.01% |
1,537
+136
| +10% | +$1.12K |
|
|
CLCT
2049
PUT
DELISTED
Collectors Universe
CLCT
| $1.17M | ﹤0.01% |
236
-123
| -34% | -$5.28K |
|
2050
PUT
Cameco
CCJ
$38.3B
| $1.17M | ﹤0.01% |
1,155
+1,011
| +702% | +$10.9K |
|
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.