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 | |
|---|---|---|---|---|---|---|
851
CALL
Linde
LIN
$234B
| $5.05M | 0.01% |
238
-51
| -18% | -$9.85K |
|
|
IMMU
852
PUT
DELISTED
Immunomedics Inc
IMMU
| $5.04M | 0.01% |
1,422
+1,212
| +577% | +$35.4K |
|
853
PUT
Papa John's
PZZA
$999M
| $5.03M | 0.01% |
633
+211
| +50% | +$15.7K |
|
854
PUT
Idexx Laboratories
IDXX
$42.5B
| $5.02M | 0.01% |
152
-10
| -6% | -$2.9K |
|
855
PUT
Alnylam Pharmaceuticals
ALNY
$35.9B
| $4.99M | 0.01% |
337
-370
| -52% | -$49.9K |
|
856
CALL
Scotiabank
BNS
$106B
| $4.99M | 0.01% |
1,210
+896
| +285% | +$35.8K |
|
|
GRMN
857
CALL
Garmin
GRMN
$46.3B
| $4.98M | 0.01% |
511
-5
| -1% | -$428 |
|
858
CALL
Omnicom Group
OMC
$22.2B
| $4.97M | 0.01% |
910
+424
| +87% | +$23.1K |
|
859
CALL
Vale
VALE
$63.1B
| $4.96M | 0.01% |
4,813
-2,933
| -38% | -$26.8K |
|
|
BNY
860
PUT
Bank of New York Mellon
BNY
$109B
| $4.95M | 0.01% |
1,280
+108
| +9% | +$3.95K |
|
861
CALL
PACCAR
PCAR
$68.8B
| $4.95M | 0.01% |
992
+353
| +55% | +$16.5K |
|
|
AZPN
862
PUT
DELISTED
ASPEN TECHNOLOGY INC
AZPN
| $4.92M | 0.01% |
475
+275
| +138% | +$2.85M |
|
863
CALL
Incyte
INCY
$23.3B
| $4.92M | 0.01% |
473
-311
| -40% | -$30K |
|
864
CALL
AeroVironment
AVAV
$8.03B
| $4.91M | 0.01% |
617
+301
| +95% | +$19.4K |
|
865
CALL
MSCI
MSCI
$40.2B
| $4.91M | 0.01% |
147
+5
| +4% | +$1.62K |
|
866
CALL
Cadence Design Systems
CDNS
$91.1B
| $4.89M | 0.01% |
510
+371
| +267% | +$31.1K |
|
867
PUT
HubSpot
HUBS
$9.73B
| $4.89M | 0.01% |
218
+44
| +25% | +$7.91K |
|
868
CALL
Tractor Supply
TSCO
$15.9B
| $4.89M | 0.01% |
1,855
+605
| +48% | +$13.2K |
|
|
SRNE
869
CALL
DELISTED
Sorrento Therapeutics, Inc.
SRNE
| $4.83M | 0.01% |
7,696
+4,737
| +160% | +$18.1K |
|
870
State Street Materials Select Sector SPDR ETF
XLB
$8.35B
| $4.82M | 0.01% |
171,192
-71,084
| -29% | -$1.87M |
|
871
PUT
Moody's
MCO
$82.5B
| $4.81M | 0.01% |
175
-49
| -22% | -$12.4K |
|
872
CALL
Air Products & Chemicals
APD
$65.5B
| $4.8M | 0.01% |
199
+146
| +275% | +$33.3K |
|
873
CALL
Dropbox
DBX
$6.63B
| $4.78M | 0.01% |
2,194
-1,093
| -33% | -$23.1K |
|
874
PUT
Boston Beer
SAM
$1.82B
| $4.78M | 0.01% |
89
+64
| +256% | +$31K |
|
875
CALL
Quest Diagnostics
DGX
$25.2B
| $4.77M | 0.01% |
419
-157
| -27% | -$16.7K |
|
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.