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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1351
PUT
Invesco Mortgage Capital
IVR
$779M
| $2.47M | ﹤0.01% |
912
+629
| +222% | +$19.4K |
|
1352
PUT
nCino
NCNO
$1.81B
| $2.47M | ﹤0.01% |
+310
| New | +$24.7K |
|
|
UN
1353
PUT
DELISTED
Unilever NV New York Registry Shares
UN
| $2.47M | ﹤0.01% |
409
-207
| -34% | -$12K |
|
1354
Thermo Fisher Scientific
TMO
$209B
| $2.47M | ﹤0.01% |
5,594
+3,670
| +191% | +$1.52M |
|
|
AYX
1355
DELISTED
Alteryx Inc
AYX
| $2.47M | ﹤0.01% |
21,741
+9,918
| +84% | +$1.35M |
|
1356
PUT
Repligen
RGEN
$7.53B
| $2.46M | ﹤0.01% |
167
-51
| -23% | -$7.29K |
|
1357
CALL
Viatris
VTRS
$20.1B
| $2.46M | ﹤0.01% |
1,660
-415
| -20% | -$6.63K |
|
1358
CALL
Blackstone Mortgage Trust
BXMT
$2.83B
| $2.46M | ﹤0.01% |
1,120
-55
| -5% | -$1.29K |
|
1359
CALL
Ralph Lauren
RL
$22.3B
| $2.46M | ﹤0.01% |
362
+178
| +97% | +$12.7K |
|
1360
PUT
Churchill Downs
CHDN
$5.98B
| $2.46M | ﹤0.01% |
300
+224
| +295% | +$17.4K |
|
|
MNDT
1361
PUT
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $2.45M | ﹤0.01% |
1,985
-406
| -17% | -$5.56K |
|
1362
PUT
APA Corp
APA
$12.8B
| $2.45M | ﹤0.01% |
2,587
-795
| -24% | -$10.9K |
|
1363
CALL
Box
BOX
$3.99B
| $2.44M | ﹤0.01% |
1,408
-203
| -13% | -$3.75K |
|
|
PXD
1364
CALL
DELISTED
Pioneer Natural Resource Co.
PXD
| $2.44M | ﹤0.01% |
284
-146
| -34% | -$14.4K |
|
1365
ProShares UltraPro QQQ
TQQQ
$31.7B
| $2.43M | ﹤0.01% |
148,680
-897,616
| -86% | -$14.2M |
|
|
BZUN
1366
PUT
Baozun
BZUN
$144M
| $2.43M | ﹤0.01% |
747
-271
| -27% | -$10.8K |
|
1367
CALL
LyondellBasell Industries
LYB
$19.7B
| $2.42M | ﹤0.01% |
344
-298
| -46% | -$20.6K |
|
1368
PUT
PagSeguro Digital
PAGS
$2.59B
| $2.42M | ﹤0.01% |
643
-102
| -14% | -$3.96K |
|
1369
CALL
PACCAR
PCAR
$70.3B
| $2.42M | ﹤0.01% |
426
-566
| -57% | -$31.7K |
|
|
ZNGA
1370
PUT
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $2.42M | ﹤0.01% |
2,655
+1,842
| +227% | +$17.1K |
|
1371
Direxion Daily Financial Bull 3x ETF
FAS
$2.38B
| $2.42M | ﹤0.01% |
71,479
+35,266
| +97% | +$1.26M |
|
1372
CALL
Dave & Buster's
PLAY
$346M
| $2.42M | ﹤0.01% |
1,595
-526
| -25% | -$7.76K |
|
1373
BP
BP
$113B
| $2.42M | ﹤0.01% |
138,459
-145,190
| -51% | -$3.14M |
|
|
WRK
1374
PUT
DELISTED
WestRock Company
WRK
| $2.41M | ﹤0.01% |
695
+388
| +126% | +$12K |
|
1375
PUT
Insulet
PODD
$11.3B
| $2.41M | ﹤0.01% |
102
-47
| -32% | -$9.9K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.