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 | |
|---|---|---|---|---|---|---|
226
CALL
Proshares UltraShort Technology
REW
$3.37M
| $34.1M | 0.05% |
907
+736
| +430% | +$251K |
|
227
CALL
American Express
AXP
$233B
| $34M | 0.05% |
3,395
+253
| +8% | +$24.9K |
|
228
PUT
Newmont
NEM
$101B
| $33.9M | 0.05% |
5,343
-1,518
| -22% | -$99K |
|
229
CALL
Datadog
DDOG
$87B
| $33.8M | 0.05% |
3,307
+1,462
| +79% | +$127K |
|
230
CALL
American Airlines Group
AAL
$8.83B
| $33.8M | 0.05% |
27,484
+9,615
| +54% | +$121K |
|
231
CALL
NextEra Energy
NEE
$187B
| $33.3M | 0.05% |
4,804
+2,400
| +100% | +$166K |
|
232
PUT
Morgan Stanley
MS
$338B
| $33.3M | 0.05% |
6,887
-1,220
| -15% | -$61.5K |
|
233
PUT
Direxion Daily Technology Bull 3x ETF
TECL
$5.37B
| $33.2M | 0.05% |
48,650
-51,070
| -51% | -$1.47M |
|
|
234
CALL
Morgan Stanley
MS
$338B
| $33.1M | 0.05% |
6,838
+2,622
| +62% | +$132K |
|
235
PUT
Wynn Resorts
WYNN
$10.1B
| $32.8M | 0.04% |
4,572
+185
| +4% | +$14.7K |
|
236
CALL
Okta
OKTA
$23.4B
| $32.6M | 0.04% |
1,523
-875
| -36% | -$182K |
|
237
PUT
3M
MMM
$87.3B
| $32.5M | 0.04% |
2,430
+266
| +12% | +$35.8K |
|
238
PUT
Snap
SNAP
$7.35B
| $32.5M | 0.04% |
12,445
+4,994
| +67% | +$116K |
|
239
CALL
Pinterest
PINS
$12.3B
| $32.5M | 0.04% |
7,822
+5,126
| +190% | +$167K |
|
240
PUT
Blackrock
BLK
$162B
| $32.5M | 0.04% |
576
-158
| -22% | -$90.1K |
|
241
CALL
Teladoc Health
TDOC
$1.56B
| $32.4M | 0.04% |
1,480
+274
| +23% | +$58K |
|
|
242
CALL
Newmont
NEM
$101B
| $32.1M | 0.04% |
5,055
+2,451
| +94% | +$160K |
|
243
PUT
Comcast
CMCSA
$80.8B
| $31.5M | 0.04% |
6,818
-1,038
| -13% | -$45.1K |
|
244
CALL
Deere & Co
DE
$165B
| $31.5M | 0.04% |
1,422
+324
| +30% | +$62.6K |
|
245
CALL
Trade Desk
TTD
$7.97B
| $31.2M | 0.04% |
6,010
| – | – |
|
246
CALL
Wayfair
W
$10.7B
| $30.7M | 0.04% |
1,055
-185
| -15% | -$50.6K |
|
247
PUT
Hilton Worldwide
HLT
$72.4B
| $30.6M | 0.04% |
3,583
+991
| +38% | +$82.8K |
|
248
PUT
NXP Semiconductors
NXPI
$69.3B
| $30.5M | 0.04% |
2,445
+731
| +43% | +$89.2K |
|
|
249
PUT
Pinterest
PINS
$12.3B
| $30.3M | 0.04% |
7,310
+2,333
| +47% | +$76.1K |
|
250
CALL
ProShares UltraShort Health Care
RXD
$3.29M
| $30.3M | 0.04% |
5,858
+2,197
| +60% | +$104K |
|
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.