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 | |
|---|---|---|---|---|---|---|
1601
PUT
Williams Companies
WMB
$90.5B
| $1.78M | ﹤0.01% |
936
-1,092
| -54% | -$20.3K |
|
|
ADVM
1602
DELISTED
Adverum Biotechnologies
ADVM
| $1.78M | ﹤0.01% |
8,522
+7,292
| +593% | +$1.29M |
|
1603
CALL
Citizens Financial Group
CFG
$30.4B
| $1.78M | ﹤0.01% |
704
+147
| +26% | +$3.34K |
|
1604
PUT
Vipshop
VIPS
$6.84B
| $1.77M | ﹤0.01% |
892
+465
| +109% | +$7.99K |
|
1605
Welltower
WELL
$178B
| $1.77M | ﹤0.01% |
34,281
+10,021
| +41% | +$492K |
|
1606
CALL
JetBlue
JBLU
$1.96B
| $1.77M | ﹤0.01% |
1,625
-47
| -3% | -$463 |
|
1607
Winnebago Industries
WGO
$870M
| $1.77M | ﹤0.01% |
+26,592
| New | +$1.36M |
|
1608
CALL
Boston Beer
SAM
$1.88B
| $1.77M | ﹤0.01% |
33
+16
| +94% | +$7.75K |
|
1609
CALL
T-Mobile US
TMUS
$193B
| $1.77M | ﹤0.01% |
1,386
+469
| +51% | +$45K |
|
1610
PUT
Deckers Outdoor
DECK
$13.3B
| $1.77M | ﹤0.01% |
540
+138
| +34% | +$3.8K |
|
1611
PUT
Guardant Health
GH
$19.5B
| $1.76M | ﹤0.01% |
217
-113
| -34% | -$9.11K |
|
1612
PUT
PTC Therapeutics
PTCT
$6.37B
| $1.76M | ﹤0.01% |
347
-244
| -41% | -$12K |
|
1613
PUT
AeroVironment
AVAV
$7.57B
| $1.76M | ﹤0.01% |
221
+196
| +784% | +$12.6K |
|
1614
PUT
Corbus Pharmaceuticals
CRBP
$170M
| $1.76M | ﹤0.01% |
70
+65
| +1,300% | +$13.1K |
|
1615
PUT
Emerson Electric
EMR
$82.9B
| $1.75M | ﹤0.01% |
283
-202
| -42% | -$11.5K |
|
1616
CALL
Tapestry
TPR
$28.8B
| $1.75M | ﹤0.01% |
1,318
+195
| +17% | +$2.77K |
|
|
MRTX
1617
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
| $1.75M | ﹤0.01% |
15,322
+10,098
| +193% | +$979K |
|
1618
CALL
BWX Technologies
BWXT
$16B
| $1.74M | ﹤0.01% |
307
+298
| +3,311% | +$16.7K |
|
1619
CALL
Vulcan Materials
VMC
$36.3B
| $1.74M | ﹤0.01% |
150
+95
| +173% | +$10.4K |
|
1620
CALL
Warrior Met Coal
HCC
$4.23B
| $1.73M | ﹤0.01% |
1,126
+900
| +398% | +$12.3K |
|
1621
PUT
Bunge Global
BG
$23.6B
| $1.73M | ﹤0.01% |
421
+81
| +24% | +$3.14K |
|
1622
PUT
Teck Resources
TECK
$29.5B
| $1.73M | ﹤0.01% |
1,662
+39
| +2% | +$358 |
|
1623
PUT
IQVIA
IQV
$34.7B
| $1.73M | ﹤0.01% |
122
-81
| -40% | -$11K |
|
1624
CALL
KKR & Co
KKR
$89.2B
| $1.73M | ﹤0.01% |
560
-1,051
| -65% | -$28.2K |
|
1625
CALL
Ally Financial
ALLY
$13.1B
| $1.73M | ﹤0.01% |
871
+247
| +40% | +$4.2K |
|
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.