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 | |
|---|---|---|---|---|---|---|
1126
State Street SPDR EURO STOXX 50 ETF
FEZ
$4.25B
| $3.27M | 0.01% |
92,046
+66,782
| +264% | +$2.16M |
|
1127
PUT
Macy's
M
$6.14B
| $3.26M | 0.01% |
4,743
-5,585
| -54% | -$34.4K |
|
1128
CALL
Agilent Technologies
A
$39.5B
| $3.26M | 0.01% |
369
-93
| -20% | -$7.62K |
|
1129
CALL
Sprouts Farmers Market
SFM
$6.91B
| $3.26M | 0.01% |
1,274
+209
| +20% | +$4.78K |
|
1130
PUT
Royal Gold
RGLD
$16.9B
| $3.26M | 0.01% |
262
-379
| -59% | -$45.8K |
|
1131
CALL
TG Therapeutics
TGTX
$8.5B
| $3.25M | 0.01% |
1,671
-1,141
| -41% | -$18.4K |
|
1132
CALL
Halozyme
HALO
$9.59B
| $3.25M | 0.01% |
1,214
+609
| +101% | +$13.7K |
|
|
BLUE
1133
CALL
DELISTED
bluebird bio
BLUE
| $3.25M | 0.01% |
41
+24
| +141% | +$18.1K |
|
|
AVLR
1134
CALL
DELISTED
Avalara, Inc.
AVLR
| $3.25M | 0.01% |
244
-53
| -18% | -$5.21K |
|
|
XIFR
1135
PUT
XPLR Infrastructure LP
XIFR
$1.18B
| $3.25M | 0.01% |
633
+118
| +23% | +$5.71K |
|
1136
PUT
Tower Semiconductor
TSEM
$29.4B
| $3.25M | 0.01% |
1,700
+1,085
| +176% | +$20.8K |
|
1137
CALL
The Mosaic Company
MOS
$7.08B
| $3.24M | 0.01% |
2,591
+559
| +28% | +$6.7K |
|
1138
CALL
Under Armour Class C
UA
$2.81B
| $3.23M | 0.01% |
3,458
+2,199
| +175% | +$18.7K |
|
|
FISV
1139
Fiserv Inc
FISV
$26.6B
| $3.23M | 0.01% |
33,111
+9,053
| +38% | +$912K |
|
|
INFO
1140
PUT
DELISTED
IHS Markit Ltd. Common Shares
INFO
| $3.23M | 0.01% |
428
+395
| +1,197% | +$26.9K |
|
1141
CALL
Toll Brothers
TOL
$13.7B
| $3.22M | 0.01% |
989
+25
| +3% | +$684 |
|
1142
AstraZeneca
AZN
$261B
| $3.21M | 0.01% |
30,384
+27,589
| +987% | +$2.85M |
|
|
XLRN
1143
CALL
DELISTED
Acceleron Pharma
XLRN
| $3.21M | 0.01% |
337
+31
| +10% | +$2.99K |
|
1144
CALL
Zimmer Biomet
ZBH
$17.3B
| $3.2M | 0.01% |
276
+211
| +325% | +$24.3K |
|
|
MOMO
1145
CALL
Hello Group
MOMO
$870M
| $3.19M | 0.01% |
1,825
+1,463
| +404% | +$30.7K |
|
1146
CALL
First Solar
FSLR
$22.1B
| $3.19M | 0.01% |
644
-60
| -9% | -$2.68K |
|
1147
CALL
StoneCo
STNE
$2.67B
| $3.19M | 0.01% |
822
+39
| +5% | +$1.14K |
|
1148
CALL
Alaska Air
ALK
$4.99B
| $3.18M | 0.01% |
878
+92
| +12% | +$3K |
|
1149
PUT
Aptiv
APTV
$11.9B
| $3.18M | 0.01% |
408
-137
| -25% | -$9.43K |
|
1150
PUT
Church & Dwight Co
CHD
$22.8B
| $3.18M | 0.01% |
411
+10
| +2% | +$727 |
|
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.