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 | |
|---|---|---|---|---|---|---|
376
PUT
Chewy
CHWY
$8.81B
| $15.4M | 0.02% |
2,807
-551
| -16% | -$29.7K |
|
377
PUT
Norwegian Cruise Line
NCLH
$8.87B
| $15.3M | 0.02% |
8,959
-4,158
| -32% | -$65.8K |
|
|
PARA
378
PUT
DELISTED
Paramount Global Class B
PARA
| $15.3M | 0.02% |
5,467
+825
| +18% | +$22.1K |
|
379
PUT
Sherwin-Williams
SHW
$78.9B
| $15.3M | 0.02% |
657
+471
| +253% | +$103K |
|
|
VMW
380
PUT
DELISTED
VMware, Inc
VMW
| $15.2M | 0.02% |
1,061
+640
| +152% | +$90.9K |
|
381
CALL
Equity Residential
EQR
$25.6B
| $15.2M | 0.02% |
2,966
+774
| +35% | +$42.8K |
|
382
CALL
Cigna
CI
$75.4B
| $15.2M | 0.02% |
895
-343
| -28% | -$60.4K |
|
383
PUT
Linde
LIN
$235B
| $15.1M | 0.02% |
636
+110
| +21% | +$26.7K |
|
384
CALL
Philip Morris
PM
$303B
| $15.1M | 0.02% |
2,015
+46
| +2% | +$3.55K |
|
385
CALL
Electronic Arts
EA
$52.4B
| $15M | 0.02% |
1,152
+74
| +7% | +$10.1K |
|
|
SHNY
386
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $15M | 0.02% |
14,749
-808
| -5% | -$822K |
|
387
PUT
Palo Alto Networks
PANW
$273B
| $14.9M | 0.02% |
3,648
+876
| +32% | +$36.4K |
|
388
CALL
Lockheed Martin
LMT
$119B
| $14.8M | 0.02% |
387
-445
| -53% | -$170K |
|
389
CALL
Marathon Petroleum
MPC
$92.2B
| $14.7M | 0.02% |
5,024
-1,545
| -24% | -$54.3K |
|
390
CALL
Veeva Systems
VEEV
$30B
| $14.7M | 0.02% |
523
-19
| -4% | -$5.01K |
|
391
CALL
Kimberly-Clark
KMB
$36.1B
| $14.7M | 0.02% |
994
+673
| +210% | +$101K |
|
392
PUT
American Tower
AMT
$77.4B
| $14.6M | 0.02% |
605
+180
| +42% | +$45.6K |
|
393
CALL
S&P Global
SPGI
$127B
| $14.6M | 0.02% |
404
-212
| -34% | -$74.8K |
|
394
PUT
NetEase
NTES
$77.6B
| $14.5M | 0.02% |
1,590
+180
| +13% | +$16.9K |
|
395
CALL
Western Digital
WDC
$192B
| $14.3M | 0.02% |
5,165
-935
| -15% | -$27.8K |
|
396
PUT
Workhorse Group
WKHS
$30.4M
| $14.2M | 0.02% |
2
+1
| +100% | +$57.2K |
|
|
XLNX
397
CALL
DELISTED
Xilinx Inc
XLNX
| $14.2M | 0.02% |
1,364
+526
| +63% | +$54K |
|
398
PUT
Honeywell
HON
$73.8B
| $14.2M | 0.02% |
915
+43
| +5% | +$6.39K |
|
|
STZ.B
399
CALL
DELISTED
CONSTELLATION BRANDS, INC. CLASS B
STZ.B
| $14.1M | 0.02% |
746
-339
| -31% | -$61.3K |
|
|
ABMD
400
PUT
DELISTED
Abiomed Inc
ABMD
| $14.1M | 0.02% |
509
+97
| +24% | +$27.9K |
|
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.