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 | |
|---|---|---|---|---|---|---|
|
AAWW
1801
CALL
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $1.94M | ﹤0.01% |
356
+244
| +218% | +$14.3K |
|
1802
CALL
Elanco Animal Health
ELAN
$12.4B
| $1.94M | ﹤0.01% |
632
+259
| +69% | +$7.9K |
|
1803
QuidelOrtho
QDEL
$1.09B
| $1.94M | ﹤0.01% |
10,789
+50
| +0.5% | +$11.1K |
|
1804
CALL
Arvinas
ARVN
$518M
| $1.94M | ﹤0.01% |
228
+227
| +22,700% | +$7.83K |
|
1805
PUT
Cboe Global Markets
CBOE
$29.8B
| $1.94M | ﹤0.01% |
208
+60
| +41% | +$5.25K |
|
1806
PUT
Generac Holdings
GNRC
$11.9B
| $1.93M | ﹤0.01% |
85
+38
| +81% | +$8.18K |
|
|
SOHU
1807
Sohu.com
SOHU
$336M
| $1.93M | ﹤0.01% |
121,223
+94,407
| +352% | +$1.73M |
|
1808
Roundhill Sports Betting & iGaming ETF
BETZ
$49.7M
| $1.93M | ﹤0.01% |
74,609
+30,542
| +69% | +$698K |
|
1809
CALL
Park Hotels & Resorts
PK
$2.97B
| $1.93M | ﹤0.01% |
1,123
+66
| +6% | +$915 |
|
1810
Aramark
ARMK
$15B
| $1.92M | ﹤0.01% |
69,256
+25,939
| +60% | +$621K |
|
1811
PUT
Yum China
YUMC
$14.9B
| $1.92M | ﹤0.01% |
337
-159
| -32% | -$8.93K |
|
1812
CALL
Exelixis
EXEL
$13.9B
| $1.92M | ﹤0.01% |
958
+181
| +23% | +$3.79K |
|
1813
Futu Holdings
FUTU
$13.9B
| $1.92M | ﹤0.01% |
41,999
+27,584
| +191% | +$1.04M |
|
|
PMT
1814
CALL
PennyMac Mortgage Investment
PMT
$849M
| $1.92M | ﹤0.01% |
1,092
+281
| +35% | +$4.76K |
|
1815
PUT
Zimmer Biomet
ZBH
$17.7B
| $1.91M | ﹤0.01% |
128
-295
| -70% | -$41.7K |
|
|
VIEW
1816
CALL
DELISTED
View, Inc. Class A Common Stock
VIEW
| $1.91M | ﹤0.01% |
+29
| New | +$18K |
|
|
WFH
1817
DELISTED
Direxion Work From Home ETF
WFH
| $1.91M | ﹤0.01% |
28,233
+24,160
| +593% | +$1.45M |
|
1818
PUT
Royal Gold
RGLD
$17.1B
| $1.9M | ﹤0.01% |
179
-216
| -55% | -$25K |
|
1819
CALL
Microvision
MVIS
$88.2M
| $1.9M | ﹤0.01% |
3,534
+2,334
| +195% | +$6.87K |
|
1820
CALL
Pluri
PLUR
$19.2M
| $1.9M | ﹤0.01% |
336
-12
| -3% | -$875 |
|
1821
CALL
Rapid7
RPD
$634M
| $1.89M | ﹤0.01% |
210
-46
| -18% | -$3.29K |
|
1822
CALL
Malibu Boats
MBUU
$544M
| $1.89M | ﹤0.01% |
303
+293
| +2,930% | +$16.9K |
|
1823
Pool Corp
POOL
$6.7B
| $1.88M | ﹤0.01% |
5,059
-4,105
| -45% | -$1.43M |
|
1824
PUT
Corpay
CPAY
$24.2B
| $1.88M | ﹤0.01% |
69
+20
| +41% | +$5.13K |
|
1825
CALL
BlackLine
BL
$1.69B
| $1.88M | ﹤0.01% |
141
+114
| +422% | +$12.7K |
|
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.