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 | |
|---|---|---|---|---|---|---|
|
I
2501
DELISTED
INTELSAT S. A.
I
| $566K | ﹤0.01% |
18,873
-67,297
| -78% | -$1.47M |
|
|
BID
2502
CALL
DELISTED
Sotheby's
BID
| $565K | ﹤0.01% |
115
-50
| -30% | -$2.53K |
|
|
HIBB
2503
CALL
DELISTED
Hibbett, Inc. Common Stock
HIBB
| $565K | ﹤0.01% |
301
-491
| -62% | -$11.1K |
|
2504
CALL
Fomento Económico Mexicano
FMX
$43.3B
| $564K | ﹤0.01% |
57
-13
| -19% | -$1.25K |
|
|
GES
2505
DELISTED
Guess Inc
GES
| $564K | ﹤0.01% |
24,998
+692
| +3% | +$15.7K |
|
2506
CALL
Crocs
CROX
$6.69B
| $562K | ﹤0.01% |
264
+191
| +262% | +$3.67K |
|
|
QIWI
2507
PUT
DELISTED
QIWI PLC
QIWI
| $562K | ﹤0.01% |
427
-229
| -35% | -$3.38K |
|
2508
PUT
Inogen
INGN
$167M
| $561K | ﹤0.01% |
23
-87
| -79% | -$20.1K |
|
2509
PUT
Progressive
PGR
$124B
| $561K | ﹤0.01% |
79
+13
| +20% | +$836 |
|
2510
CALL
Galectin Therapeutics
GALT
$229M
| $560K | ﹤0.01% |
932
+583
| +167% | +$3.21K |
|
2511
Macerich
MAC
$7.32B
| $560K | ﹤0.01% |
10,130
+6,176
| +156% | +$356K |
|
2512
State Street Communication Services Select Sector SPDR ETF
XLC
$21.9B
| $560K | ﹤0.01% |
+11,435
| New | +$565K |
|
2513
CALL
Designer Brands
DBI
$277M
| $559K | ﹤0.01% |
165
-78
| -32% | -$2.28K |
|
2514
CALL
Iron Mountain
IRM
$38.2B
| $559K | ﹤0.01% |
162
+48
| +42% | +$1.71K |
|
2515
Synopsys
SNPS
$71.5B
| $558K | ﹤0.01% |
+5,664
| New | +$540K |
|
|
ADMS
2516
CALL
DELISTED
Adamas Pharmaceuticals
ADMS
| $558K | ﹤0.01% |
279
-14
| -5% | -$329 |
|
|
EXPR
2517
PUT
DELISTED
Express, Inc.
EXPR
| $557K | ﹤0.01% |
25
+17
| +213% | +$3.48K |
|
|
NXTM
2518
CALL
DELISTED
NxStage Medical Inc.
NXTM
| $557K | ﹤0.01% |
200
+61
| +44% | +$1.72K |
|
|
CVRR
2519
CALL
DELISTED
CVR Refining, LP
CVRR
| $557K | ﹤0.01% |
283
-921
| -76% | -$19.5K |
|
2520
PUT
BWX Technologies
BWXT
$16B
| $556K | ﹤0.01% |
89
-39
| -30% | -$2.47K |
|
|
HBI
2521
PUT
DELISTED
Hanesbrands
HBI
| $556K | ﹤0.01% |
302
-122
| -29% | -$2.37K |
|
2522
PUT
TG Therapeutics
TGTX
$8.58B
| $556K | ﹤0.01% |
993
+950
| +2,209% | +$10.9K |
|
2523
Banco Bradesco
BBD
$38.1B
| $554K | ﹤0.01% |
+125,137
| New | +$577K |
|
|
B
2524
PUT
Barrick Mining
B
$62.2B
| $554K | ﹤0.01% |
500
+76
| +18% | +$846 |
|
2525
PUT
Unum
UNM
$13.8B
| $554K | ﹤0.01% |
142
+97
| +216% | +$3.62K |
|
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.