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 | |
|---|---|---|---|---|---|---|
2226
PUT
Kimco Realty
KIM
$17.6B
| $1.3M | ﹤0.01% |
866
-227
| -21% | -$3K |
|
2227
PUT
OraSure Technologies
OSUR
$273M
| $1.3M | ﹤0.01% |
1,227
+738
| +151% | +$9.68K |
|
|
XEC
2228
PUT
DELISTED
CIMAREX ENERGY CO
XEC
| $1.3M | ﹤0.01% |
346
+118
| +52% | +$3.78K |
|
2229
CALL
Wyndham Hotels & Resorts
WH
$5.46B
| $1.29M | ﹤0.01% |
218
-105
| -33% | -$5.66K |
|
2230
PUT
Insperity
NSP
$1.85B
| $1.29M | ﹤0.01% |
159
+114
| +253% | +$9.36K |
|
2231
PUT
Red Rock Resorts
RRR
$3.74B
| $1.29M | ﹤0.01% |
517
-1,324
| -72% | -$28.2K |
|
|
AGNT
2232
PUT
AGNT Inc
AGNT
$664M
| $1.29M | ﹤0.01% |
410
+144
| +54% | +$3.98K |
|
2233
ProShares UltraPro QQQ
TQQQ
$31.1B
| $1.29M | ﹤0.01% |
56,920
-91,760
| -62% | -$1.73M |
|
2234
CALL
Cardiff Oncology
CRDF
$64.3M
| $1.29M | ﹤0.01% |
716
-96
| -12% | -$1.69K |
|
|
HBI
2235
CALL
DELISTED
Hanesbrands
HBI
| $1.29M | ﹤0.01% |
884
-133
| -13% | -$2.01K |
|
|
COOP
2236
PUT
DELISTED
Mr. Cooper
COOP
| $1.29M | ﹤0.01% |
415
-339
| -45% | -$8.68K |
|
2237
PUT
Purple Innovation
PRPL
$33.2M
| $1.29M | ﹤0.01% |
16
-1
| -6% | -$729 |
|
2238
CALL
Gold Fields
GFI
$29.2B
| $1.28M | ﹤0.01% |
1,386
+842
| +155% | +$8.89K |
|
2239
Cheniere Energy
LNG
$56.5B
| $1.28M | ﹤0.01% |
+21,400
| New | +$1.15M |
|
|
VER
2240
PUT
DELISTED
VEREIT, Inc.
VER
| $1.28M | ﹤0.01% |
340
+254
| +295% | +$9.02K |
|
|
EFC
2241
CALL
Ellington Financial
EFC
$1.68B
| $1.28M | ﹤0.01% |
864
-2
| -0.2% | -$28 |
|
|
MRO
2242
DELISTED
Marathon Oil Corporation
MRO
| $1.28M | ﹤0.01% |
192,249
+115,621
| +151% | +$621K |
|
|
NUAN
2243
DELISTED
Nuance Communications, Inc.
NUAN
| $1.28M | ﹤0.01% |
29,073
-21,919
| -43% | -$831K |
|
2244
CALL
Sportsman's Warehouse
SPWH
$43.7M
| $1.28M | ﹤0.01% |
729
+522
| +252% | +$7.64K |
|
2245
CALL
Huazhu Hotels Group
HTHT
$12.4B
| $1.28M | ﹤0.01% |
284
+267
| +1,571% | +$12.2K |
|
2246
CALL
Perrigo
PRGO
$1.4B
| $1.28M | ﹤0.01% |
286
-315
| -52% | -$14.6K |
|
|
AMED
2247
DELISTED
Amedisys
AMED
| $1.28M | ﹤0.01% |
+4,352
| New | +$1.12M |
|
2248
CALL
Medifast
MED
$108M
| $1.28M | ﹤0.01% |
65
+12
| +23% | +$2.12K |
|
2249
CALL
Transocean
RIG
$5.92B
| $1.27M | ﹤0.01% |
5,522
-2,183
| -28% | -$3.21K |
|
2250
PagerDuty
PD
$700M
| $1.27M | ﹤0.01% |
30,545
+23,029
| +306% | +$785K |
|
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.