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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ATVI
226
CALL
DELISTED
Activision Blizzard
ATVI
| $30.1M | 0.05% |
3,969
+2,236
| +129% | +$156K |
|
227
CALL
Medtronic
MDT
$104B
| $30M | 0.05% |
3,271
+1,214
| +59% | +$116K |
|
228
CALL
American Express
AXP
$238B
| $29.9M | 0.05% |
3,142
+2,092
| +199% | +$193K |
|
229
CALL
Ulta Beauty
ULTA
$20.7B
| $29.8M | 0.05% |
1,467
+470
| +47% | +$101K |
|
230
CALL
CrowdStrike
CRWD
$191B
| $29.3M | 0.05% |
11,688
+2,008
| +21% | +$40.3K |
|
231
PUT
Sea Limited
SE
$64.5B
| $29.1M | 0.05% |
2,715
-2,207
| -45% | -$160K |
|
232
PUT
American Airlines Group
AAL
$9.82B
| $28.8M | 0.05% |
22,019
+9,778
| +80% | +$119K |
|
233
PUT
Invesco CurrencyShares Euro Currency Trust
FXE
$332M
| $28.7M | 0.05% |
2,704
-1,277
| -32% | -$133K |
|
234
CALL
Royal Caribbean
RCL
$76.5B
| $28.6M | 0.05% |
5,689
+2,324
| +69% | +$105K |
|
235
Walt Disney
DIS
$167B
| $28.5M | 0.05% |
255,921
+246,718
| +2,681% | +$27.2M |
|
236
PUT
IBM
IBM
$193B
| $28.3M | 0.05% |
2,453
-2,892
| -54% | -$336K |
|
237
PUT
3M
MMM
$89B
| $28.2M | 0.05% |
2,164
-2,714
| -56% | -$342K |
|
238
CALL
Moderna
MRNA
$23.1B
| $28M | 0.04% |
4,354
+3,024
| +227% | +$166K |
|
|
SPLK
239
PUT
DELISTED
Splunk Inc
SPLK
| $27.9M | 0.04% |
1,405
+366
| +35% | +$57.9K |
|
|
240
PUT
CrowdStrike
CRWD
$191B
| $27.7M | 0.04% |
11,060
-728
| -6% | -$14.6K |
|
241
CALL
Charter Communications
CHTR
$15.8B
| $27.7M | 0.04% |
543
+148
| +37% | +$75.1K |
|
242
CALL
Accenture
ACN
$85.7B
| $26.4M | 0.04% |
1,228
+203
| +20% | +$38.4K |
|
243
PUT
Simon Property Group
SPG
$73.5B
| $26.2M | 0.04% |
3,832
+3,502
| +1,061% | +$220K |
|
244
PUT
Merck
MRK
$316B
| $26.1M | 0.04% |
3,540
-2,379
| -40% | -$179K |
|
|
245
CALL
Merck
MRK
$316B
| $25.9M | 0.04% |
3,514
-3,692
| -51% | -$278K |
|
246
CALL
Union Pacific
UNP
$174B
| $25.9M | 0.04% |
1,533
-320
| -17% | -$51.3K |
|
247
CALL
ProShares UltraShort Health Care
RXD
$3.35M
| $25.7M | 0.04% |
3,661
+1,828
| +100% | +$105K |
|
|
UCD
248
CALL
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $25.7M | 0.04% |
8,115
-11,072
| -58% | -$35.1M |
|
249
CALL
Oracle
ORCL
$361B
| $25.6M | 0.04% |
4,631
+679
| +17% | +$36K |
|
250
PUT
Enphase Energy
ENPH
$5.26B
| $25.6M | 0.04% |
5,374
+2,581
| +92% | +$123K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.