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 | |
|---|---|---|---|---|---|---|
3276
PUT
Expeditors International
EXPD
$22.4B
| $561K | ﹤0.01% |
59
-31
| -34% | -$2.82K |
|
3277
Everest Group
EG
$15.4B
| $560K | ﹤0.01% |
2,393
+1,570
| +191% | +$347K |
|
|
VLDR
3278
DELISTED
Velodyne Lidar, Inc. Common Stock
VLDR
| $560K | ﹤0.01% |
+24,553
| New | +$417K |
|
3279
CALL
AppFolio
APPF
$5.98B
| $558K | ﹤0.01% |
31
+21
| +210% | +$3.36K |
|
3280
PUT
MakeMyTrip
MMYT
$4.97B
| $558K | ﹤0.01% |
189
-2,099
| -92% | -$47.7K |
|
3281
PUT
Newell Brands
NWL
$2.2B
| $558K | ﹤0.01% |
263
+43
| +20% | +$839 |
|
3282
Titan International
TWI
$519M
| $558K | ﹤0.01% |
114,886
+110,509
| +2,525% | +$453K |
|
3283
Nutanix
NTNX
$15.4B
| $557K | ﹤0.01% |
17,486
-51,833
| -75% | -$1.41M |
|
3284
CALL
Kartoon Studios
TOON
$34.9M
| $557K | ﹤0.01% |
404
+266
| +193% | +$3.6K |
|
3285
CALL
Cenovus Energy
CVE
$52.3B
| $556K | ﹤0.01% |
922
+190
| +26% | +$887 |
|
|
FRC
3286
DELISTED
First Republic Bank
FRC
| $556K | ﹤0.01% |
3,786
-2,665
| -41% | -$347K |
|
3287
CALL
American Outdoor Brands
AOUT
$158M
| $555K | ﹤0.01% |
326
+301
| +1,204% | +$4.54K |
|
3288
CALL
Jacobs Solutions
J
$16B
| $555K | ﹤0.01% |
62
-36
| -37% | -$3.05K |
|
3289
PUT
Radware
RDWR
$1.23B
| $555K | ﹤0.01% |
200
-26
| -12% | -$650 |
|
3290
Crocs
CROX
$6.69B
| $554K | ﹤0.01% |
+8,846
| New | +$505K |
|
3291
PUT
MPLX
MPLX
$59.2B
| $554K | ﹤0.01% |
256
-25
| -9% | -$493 |
|
|
TPIC
3292
CALL
DELISTED
TPI Composites
TPIC
| $554K | ﹤0.01% |
105
+82
| +357% | +$3.28K |
|
|
HA
3293
CALL
DELISTED
Hawaiian Holdings, Inc.
HA
| $554K | ﹤0.01% |
313
-237
| -43% | -$4.01K |
|
|
AXON
3294
Axon Enterprise
AXON
$42.4B
| $553K | ﹤0.01% |
+4,515
| New | +$518K |
|
3295
CALL
Virtu Financial
VIRT
$5.12B
| $553K | ﹤0.01% |
220
-365
| -62% | -$8.46K |
|
3296
Knowles
KN
$3.2B
| $551K | ﹤0.01% |
+29,920
| New | +$500K |
|
3297
CALL
Atomera
ATOM
$203M
| $550K | ﹤0.01% |
342
+331
| +3,009% | +$3.46K |
|
3298
CALL
H&R Block
HRB
$5.37B
| $550K | ﹤0.01% |
347
-108
| -24% | -$1.86K |
|
3299
PUT
Louisiana-Pacific
LPX
$5.19B
| $550K | ﹤0.01% |
148
+25
| +20% | +$837 |
|
|
GOL
3300
CALL
DELISTED
Gol Linhas Aéreas Inteligentes S.A. American Depositary Shares (Each representing Ten Preferred Shares)
GOL
| $550K | ﹤0.01% |
561
+223
| +66% | +$1.81K |
|
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.