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 | |
|---|---|---|---|---|---|---|
2101
CALL
Factset
FDS
$9.05B
| $1.46M | ﹤0.01% |
44
+20
| +83% | +$6.61K |
|
2102
CALL
Hershey
HSY
$35.4B
| $1.46M | ﹤0.01% |
96
-79
| -45% | -$11.7K |
|
2103
CALL
NovaGold Resources
NG
$2.6B
| $1.46M | ﹤0.01% |
1,512
+560
| +59% | +$5.91K |
|
2104
SAP
SAP
$187B
| $1.46M | ﹤0.01% |
+11,216
| New | +$1.45M |
|
|
GWPH
2105
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $1.46M | ﹤0.01% |
12,672
+8,545
| +207% | +$957K |
|
2106
CALL
Monster Beverage
MNST
$91.4B
| $1.46M | ﹤0.01% |
316
-166
| -34% | -$6.97K |
|
2107
Direxion Daily Semiconductor Bull 3X ETF
SOXL
$18.7B
| $1.46M | ﹤0.01% |
46,875
+33,375
| +247% | +$800K |
|
2108
CALL
Canadian Pacific Kansas City
CP
$82B
| $1.46M | ﹤0.01% |
210
+55
| +35% | +$3.58K |
|
|
CMRC
2109
Commerce.com Inc Series 1
CMRC
$224M
| $1.45M | ﹤0.01% |
22,678
+22,433
| +9,156% | +$1.79M |
|
2110
CALL
IPG Photonics
IPGP
$3.89B
| $1.45M | ﹤0.01% |
65
+59
| +983% | +$11.8K |
|
|
MNR
2111
DELISTED
Monmouth Real Estate Investment Corp
MNR
| $1.45M | ﹤0.01% |
+83,922
| New | +$1.27M |
|
2112
CALL
Trane Technologies
TT
$106B
| $1.45M | ﹤0.01% |
101
-86
| -46% | -$11.9K |
|
2113
CALL
Proshares UltraShort Technology
REW
$3.48M
| $1.45M | ﹤0.01% |
670
-237
| -26% | -$63K |
|
|
PRTY
2114
CALL
DELISTED
Party City Holdco Inc.
PRTY
| $1.45M | ﹤0.01% |
2,358
+1,073
| +84% | +$4.17K |
|
2115
CALL
Array Technologies
ARRY
$818M
| $1.45M | ﹤0.01% |
+336
| New | +$13.5K |
|
2116
CALL
Hain Celestial
HAIN
$47.8M
| $1.45M | ﹤0.01% |
361
-134
| -27% | -$4.87K |
|
2117
CALL
nCino
NCNO
$1.81B
| $1.45M | ﹤0.01% |
200
+155
| +344% | +$12K |
|
|
SMAR
2118
PUT
DELISTED
Smartsheet Inc.
SMAR
| $1.45M | ﹤0.01% |
209
-73
| -26% | -$4.28K |
|
|
ABB
2119
CALL
DELISTED
ABB Ltd
ABB
| $1.45M | ﹤0.01% |
518
-49
| -9% | -$1.31K |
|
|
TCO
2120
CALL
DELISTED
Taubman Centers Inc.
TCO
| $1.45M | ﹤0.01% |
337
+251
| +292% | +$9.71K |
|
2121
PUT
PagerDuty
PD
$700M
| $1.45M | ﹤0.01% |
347
-495
| -59% | -$16.9K |
|
2122
CALL
PVH
PVH
$3.71B
| $1.45M | ﹤0.01% |
154
-28
| -15% | -$2.13K |
|
2123
CarParts.com
PRTS
$42.8M
| $1.44M | ﹤0.01% |
11,661
+7,515
| +181% | +$970K |
|
2124
PUT
Agios Pharmaceuticals
AGIO
$2.16B
| $1.44M | ﹤0.01% |
333
+295
| +776% | +$11.7K |
|
2125
CALL
Vornado Realty Trust
VNO
$7.47B
| $1.44M | ﹤0.01% |
386
+160
| +71% | +$5.84K |
|
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.