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 | |
|---|---|---|---|---|---|---|
426
PUT
Domino's
DPZ
$10.6B
| $13.2M | 0.02% |
311
-185
| -37% | -$73.7K |
|
427
CALL
Valero Energy
VLO
$92.3B
| $13.2M | 0.02% |
3,046
-540
| -15% | -$28.3K |
|
428
PUT
CarMax
KMX
$8.15B
| $13.2M | 0.02% |
1,433
+1,058
| +282% | +$106K |
|
429
CALL
Dow Inc
DOW
$22.5B
| $13.1M | 0.02% |
2,789
-306
| -10% | -$13.7K |
|
430
PUT
Altria Group
MO
$121B
| $13.1M | 0.02% |
3,395
+873
| +35% | +$36.3K |
|
431
CALL
T-Mobile US
TMUS
$207B
| $13.1M | 0.02% |
1,142
-244
| -18% | -$27K |
|
432
CALL
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$108M
| $13M | 0.02% |
3,782
+2,955
| +357% | +$71.5K |
|
433
Shopify
SHOP
$154B
| $13M | 0.02% |
127,360
+97,880
| +332% | +$9.73M |
|
434
CALL
DuPont de Nemours
DD
$18.9B
| $13M | 0.02% |
1,959
+180
| +10% | +$12.6K |
|
|
XLNX
435
PUT
DELISTED
Xilinx Inc
XLNX
| $13M | 0.02% |
1,248
+165
| +15% | +$16.9K |
|
436
PUT
Snowflake
SNOW
$92.8B
| $13M | 0.02% |
+518
| New | +$123K |
|
437
PUT
D.R. Horton
DHI
$40.4B
| $13M | 0.02% |
1,716
+1,091
| +175% | +$74.5K |
|
438
PUT
United Rentals
URI
$64.8B
| $12.9M | 0.02% |
742
-55
| -7% | -$9.25K |
|
439
PUT
Regeneron Pharmaceuticals
REGN
$68.3B
| $12.9M | 0.02% |
231
-154
| -40% | -$93.4K |
|
440
Zoom
ZM
$25.2B
| $12.9M | 0.02% |
27,492
+27,437
| +49,885% | +$8.77M |
|
441
CALL
Sony
SONY
$123B
| $12.8M | 0.02% |
8,325
+375
| +5% | +$5.83K |
|
442
PUT
Cigna
CI
$75.4B
| $12.6M | 0.02% |
743
+108
| +17% | +$19K |
|
443
PUT
Duke Energy
DUK
$99.7B
| $12.6M | 0.02% |
1,419
+970
| +216% | +$80K |
|
444
CALL
Inovio Pharmaceuticals
INO
$87.2M
| $12.5M | 0.02% |
895
+304
| +51% | +$63.4K |
|
445
AT&T
T
$160B
| $12.4M | 0.02% |
577,860
-169,445
| -23% | -$3.79M |
|
446
Wynn Resorts
WYNN
$9.79B
| $12.4M | 0.02% |
172,963
+8,713
| +5% | +$691K |
|
447
PUT
Freeport-McMoran
FCX
$93.4B
| $12.4M | 0.02% |
7,932
+1,732
| +28% | +$25K |
|
448
PUT
Boston Scientific
BSX
$63.9B
| $12.4M | 0.02% |
3,242
-753
| -19% | -$29K |
|
449
PUT
Humana
HUM
$47.7B
| $12.4M | 0.02% |
299
-11
| -4% | -$4.42K |
|
450
Teladoc Health
TDOC
$1.61B
| $12.3M | 0.02% |
56,296
+48,994
| +671% | +$10.4M |
|
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.