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 | |
|---|---|---|---|---|---|---|
1801
Viking Therapeutics
VKTX
$4.04B
| $1.09M | ﹤0.01% |
62,358
+47,404
| +317% | +$564K |
|
|
BBBY
1802
CALL
Bed Bath & Beyond
BBBY
$473M
| $1.08M | ﹤0.01% |
522
+30
| +6% | +$739 |
|
1803
Advanced Energy
AEIS
$12.2B
| $1.08M | ﹤0.01% |
+21,005
| New | +$1.22M |
|
1804
CALL
Bloomin' Brands
BLMN
$680M
| $1.08M | ﹤0.01% |
547
-64
| -10% | -$1.25K |
|
1805
CALL
Xcel Energy
XEL
$51B
| $1.08M | ﹤0.01% |
229
+206
| +896% | +$9.72K |
|
1806
CALL
DTE Energy
DTE
$31.1B
| $1.08M | ﹤0.01% |
116
-23
| -17% | -$2.14K |
|
1807
Funko
FNKO
$323M
| $1.08M | ﹤0.01% |
45,604
+37,188
| +442% | +$747K |
|
1808
CALL
Avis
CAR
$5.63B
| $1.08M | ﹤0.01% |
336
-173
| -34% | -$5.77K |
|
|
LEXEA
1809
CALL
DELISTED
Liberty Expedia Holdings, Inc. Class A Common Stock
LEXEA
| $1.08M | ﹤0.01% |
229
+135
| +144% | +$6.31K |
|
|
WCN
1810
CALL
Waste Connections
WCN
$42.8B
| $1.08M | ﹤0.01% |
135
+84
| +165% | +$6.59K |
|
|
SPPI
1811
PUT
DELISTED
Spectrum Pharmaceuticals Inc
SPPI
| $1.08M | ﹤0.01% |
641
+250
| +64% | +$5.41K |
|
1812
CALL
Baker Hughes
BKR
$56.8B
| $1.07M | ﹤0.01% |
318
-78
| -20% | -$2.58K |
|
1813
CALL
Range Resources
RRC
$9.11B
| $1.07M | ﹤0.01% |
633
-231
| -27% | -$3.71K |
|
1814
Incyte
INCY
$23.5B
| $1.07M | ﹤0.01% |
+15,552
| New | +$1.07M |
|
1815
PUT
H&R Block
HRB
$5.18B
| $1.07M | ﹤0.01% |
417
-1,302
| -76% | -$33K |
|
1816
Tenet Healthcare
THC
$20.1B
| $1.07M | ﹤0.01% |
+37,646
| New | +$1.24M |
|
|
GRA
1817
DELISTED
W.R. Grace & Co.
GRA
| $1.07M | ﹤0.01% |
14,999
-1,126
| -7% | -$81.2K |
|
1818
CALL
Deutsche Bank
DB
$66.3B
| $1.07M | ﹤0.01% |
942
-348
| -27% | -$4.09K |
|
1819
Vornado Realty Trust
VNO
$7.47B
| $1.07M | ﹤0.01% |
14,664
+12,459
| +565% | +$923K |
|
|
LNW
1820
PUT
DELISTED
Light & Wonder
LNW
| $1.07M | ﹤0.01% |
421
-301
| -42% | -$10.9K |
|
|
BZUN
1821
CALL
Baozun
BZUN
$143M
| $1.07M | ﹤0.01% |
220
-52
| -19% | -$2.81K |
|
1822
CALL
EPR Properties
EPR
$4.86B
| $1.07M | ﹤0.01% |
156
-413
| -73% | -$28.1K |
|
|
ZGNX
1823
PUT
DELISTED
Zogenix, Inc.
ZGNX
| $1.07M | ﹤0.01% |
215
+204
| +1,855% | +$10.4K |
|
1824
PBF Energy
PBF
$7.29B
| $1.06M | ﹤0.01% |
21,326
-1,087
| -5% | -$51.6K |
|
1825
PUT
Royal Gold
RGLD
$17.1B
| $1.06M | ﹤0.01% |
138
+60
| +77% | +$4.94K |
|
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.