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 |
Alibaba
BABA
|
+$39.9M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$39M |
| 3 |
Mastercard
MA
|
+$31.3M |
| 4 |
Apple
AAPL
|
+$25.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$25.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
JPMorgan Chase
JPM
|
+$52.8M |
| 2 |
TSMC
TSM
|
+$43M |
| 3 |
Amazon
AMZN
|
+$24.7M |
| 4 |
iShares Silver Trust
SLV
|
+$24.2M |
| 5 |
Netflix
NFLX
|
+$21.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.65% |
| 2 | Technology | 0.37% |
| 3 | Healthcare | 0.33% |
| 4 | Industrials | 0.21% |
| 5 | Communication Services | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2201
PUT
Teucrium Soybean Fund
SOYB
$57.2M
| $1.33M | ﹤0.01% |
802
-1,774
| -69% | -$30.6K |
|
2202
PUT
Suncor Energy
SU
$77.7B
| $1.32M | ﹤0.01% |
790
+500
| +172% | +$7.34K |
|
|
CEO
2203
DELISTED
CNOOC Limited
CEO
| $1.32M | ﹤0.01% |
14,464
+9,172
| +173% | +$907K |
|
2204
CALL
Leggett & Platt
LEG
$1.52B
| $1.32M | ﹤0.01% |
299
-128
| -30% | -$5.49K |
|
2205
CALL
Ventas
VTR
$48.9B
| $1.32M | ﹤0.01% |
270
-153
| -36% | -$7.07K |
|
|
AMRN
2206
PUT
Amarin Corp
AMRN
$284M
| $1.32M | ﹤0.01% |
135
-110
| -45% | -$10.6K |
|
2207
Angi Inc
ANGI
$224M
| $1.32M | ﹤0.01% |
+10,033
| New | +$1.16M |
|
2208
CALL
Green Dot
GDOT
$753M
| $1.32M | ﹤0.01% |
237
+185
| +356% | +$10.5K |
|
2209
CALL
Dycom Industries
DY
$12.9B
| $1.32M | ﹤0.01% |
175
+154
| +733% | +$10.6K |
|
2210
ProShares Short QQQ
PSQ
$694M
| $1.32M | ﹤0.01% |
18,338
+9,357
| +104% | +$727K |
|
|
GNOG
2211
PUT
DELISTED
Golden Nugget Online Gaming, Inc. Class A Common Stock
GNOG
| $1.32M | ﹤0.01% |
670
-1,759
| -72% | -$29.7K |
|
2212
CALL
SiriusXM
SIRI
$10B
| $1.32M | ﹤0.01% |
207
+109
| +111% | +$6.69K |
|
2213
CALL
Galicia Financial Group
GGAL
$7.92B
| $1.31M | ﹤0.01% |
1,504
+531
| +55% | +$4.2K |
|
2214
State Street SPDR S&P Homebuilders ETF
XHB
$1.74B
| $1.31M | ﹤0.01% |
22,777
-4,296
| -16% | -$243K |
|
2215
CALL
Iron Mountain
IRM
$38.2B
| $1.31M | ﹤0.01% |
445
-367
| -45% | -$10.2K |
|
|
IPOF
2216
PUT
DELISTED
Social Capital Hedosophia Holdings Corp. VI
IPOF
| $1.31M | ﹤0.01% |
+1,066
| New | +$12.1K |
|
|
APHA
2217
CALL
DELISTED
Aphria Inc. Common Shares
APHA
| $1.31M | ﹤0.01% |
1,889
+762
| +68% | +$4.75K |
|
2218
The Mosaic Company
MOS
$7.09B
| $1.31M | ﹤0.01% |
56,764
+38,047
| +203% | +$766K |
|
2219
Qorvo
QRVO
$7.63B
| $1.31M | ﹤0.01% |
7,855
-3,293
| -30% | -$485K |
|
2220
Vanguard FTSE Developed Markets ETF
VEA
$226B
| $1.31M | ﹤0.01% |
+27,666
| New | +$1.22M |
|
2221
CALL
Essex Property Trust
ESS
$18.9B
| $1.3M | ﹤0.01% |
55
+53
| +2,650% | +$12.2K |
|
2222
CALL
Alarm.com
ALRM
$2.56B
| $1.3M | ﹤0.01% |
126
+111
| +740% | +$8.05K |
|
|
CMPS
2223
PUT
Compass Pathways
CMPS
$1.52B
| $1.3M | ﹤0.01% |
+273
| New | +$11.6K |
|
2224
CALL
Invitation Homes
INVH
$17.7B
| $1.3M | ﹤0.01% |
438
-133
| -23% | -$3.83K |
|
2225
iShares US Home Construction ETF
ITB
$2.41B
| $1.3M | ﹤0.01% |
23,312
-83,833
| -78% | -$4.72M |
|
Similar funds
Simplex Trading's Q4 2020 Portfolio in Review
As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading's Q4 2020 filing shows 1,711 new, 3,402 increased, 3,106 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
- Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
- Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
- Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
- Simplex Trading opened 1,711 new positions and closed 1,157 in Q4 2020.
- Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.
Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.