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
|
+$148M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$67.3M |
| 3 |
Meta Platforms (Facebook)
META
|
+$63.2M |
| 4 |
Goldman Sachs
GS
|
+$23.9M |
| 5 |
Citigroup
C
|
+$23.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Berkshire Hathaway Class B
BRK.B
|
+$47.5M |
| 2 |
Apple
AAPL
|
+$46M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$44.5M |
| 4 |
Micron Technology
MU
|
+$29.1M |
| 5 |
Adobe
ADBE
|
+$22.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 1.13% |
| 2 | Communication Services | 0.89% |
| 3 | Technology | 0.68% |
| 4 | Industrials | 0.51% |
| 5 | Healthcare | 0.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2151
CALL
Banco Bradesco
BBD
$38.1B
| $770K | ﹤0.01% |
1,738
+1,296
| +293% | +$5.97K |
|
2152
CALL
Owens Corning
OC
$11.5B
| $770K | ﹤0.01% |
142
+14
| +11% | +$843 |
|
2153
United Therapeutics
UTHR
$26.3B
| $770K | ﹤0.01% |
6,027
-28
| -0.5% | -$3.46K |
|
2154
CALL
BWX Technologies
BWXT
$16B
| $769K | ﹤0.01% |
123
-39
| -24% | -$2.47K |
|
2155
AB InBev
BUD
$158B
| $768K | ﹤0.01% |
+8,781
| New | +$856K |
|
2156
PUT
Conagra Brands
CAG
$7.07B
| $767K | ﹤0.01% |
226
-851
| -79% | -$31.1K |
|
2157
CALL
Peabody Energy
BTU
$2.78B
| $766K | ﹤0.01% |
215
-108
| -33% | -$4.63K |
|
2158
PUT
Fluor
FLR
$7.29B
| $766K | ﹤0.01% |
132
+37
| +39% | +$2.02K |
|
|
MODV
2159
PUT
DELISTED
ModivCare
MODV
| $766K | ﹤0.01% |
114
+112
| +5,600% | +$7.78K |
|
2160
Direxion Daily Semiconductor Bull 3X ETF
SOXL
$18.7B
| $766K | ﹤0.01% |
+74,325
| New | +$773K |
|
|
PVG
2161
DELISTED
PRETIUM RESOURCES INC.
PVG
| $765K | ﹤0.01% |
100,552
+33,936
| +51% | +$278K |
|
|
PERY
2162
CALL
DELISTED
Perry Ellis International Inc
PERY
| $765K | ﹤0.01% |
280
+272
| +3,400% | +$7.61K |
|
2163
CALL
Cameco
CCJ
$38.3B
| $763K | ﹤0.01% |
670
-252
| -27% | -$2.65K |
|
2164
CALL
WPP
WPP
$4.04B
| $762K | ﹤0.01% |
104
+20
| +24% | +$1.56K |
|
2165
Unilever
UL
$131B
| $759K | ﹤0.01% |
+12,278
| New | +$774K |
|
2166
Dana Inc
DAN
$2.91B
| $758K | ﹤0.01% |
40,628
+24,387
| +150% | +$491K |
|
2167
PUT
Apollo Global Management
APO
$70.7B
| $756K | ﹤0.01% |
219
+95
| +77% | +$3.31K |
|
|
BKS
2168
PUT
DELISTED
Barnes & Noble
BKS
| $756K | ﹤0.01% |
1,304
+1,216
| +1,382% | +$6.86K |
|
|
GPMT
2169
CALL
Granite Point Mortgage Trust
GPMT
$63.7M
| $755K | ﹤0.01% |
+392
| New | +$7.4K |
|
2170
CALL
Malibu Boats
MBUU
$544M
| $755K | ﹤0.01% |
138
+136
| +6,800% | +$6.04K |
|
|
CASA
2171
DELISTED
Casa Systems, Inc. Common Stock
CASA
| $755K | ﹤0.01% |
+51,241
| New | +$779K |
|
2172
PUT
Green Dot
GDOT
$753M
| $754K | ﹤0.01% |
85
+41
| +93% | +$3.41K |
|
2173
PUT
Royal Bank of Canada
RY
$291B
| $753K | ﹤0.01% |
94
+7
| +8% | +$549 |
|
|
NVRO
2174
CALL
DELISTED
NEVRO CORP.
NVRO
| $752K | ﹤0.01% |
132
+12
| +10% | +$750 |
|
2175
CALL
Deluxe
DLX
$1.19B
| $751K | ﹤0.01% |
132
+131
| +13,100% | +$7.9K |
|
Similar funds
Simplex Trading's Q3 2018 Portfolio in Review
As of Q3 2018, Simplex Trading held 8,699 positions worth $31.1B, up 22% from $25.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q3 2018 filing shows 1,336 new, 3,066 increased, 2,755 reduced and 1,315 closed positions. Its largest new stake was Invesco QQQ Trust: 371,806 shares worth $69.1M. The largest sale was Berkshire Hathaway Class B, an estimated $47.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 1.1% of assets, up from 0.92% a quarter earlier, followed by Communication Services and Technology.
- Simplex Trading's largest Q3 2018 buy was Invesco QQQ Trust: 371,806 shares worth $69.1M.
- Simplex Trading added most to Amazon in Q3 2018, an estimated $148M increase.
- Simplex Trading's biggest Q3 2018 reduction was Apple, cutting an estimated $46M.
- Simplex Trading fully exited Berkshire Hathaway Class B in Q3 2018, selling an estimated $47.5M.
- Simplex Trading's ten largest holdings make up 34% of its $31.1B portfolio in Q3 2018.
- Simplex Trading opened 1,336 new positions and closed 1,315 in Q3 2018.
- Simplex Trading's portfolio value rose 22% quarter-over-quarter to $31.1B.
Based on Simplex Trading's 13F filing for Q3 2018, filed 23 Oct 2018.