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 | |
|---|---|---|---|---|---|---|
1776
PUT
Autoliv
ALV
$8.6B
| $1.12M | ﹤0.01% |
129
+107
| +486% | +$10.2K |
|
1777
CALL
FMC
FMC
$1.42B
| $1.11M | ﹤0.01% |
148
-20
| -12% | -$1.51K |
|
1778
Baker Hughes
BKR
$56.8B
| $1.11M | ﹤0.01% |
32,952
+11,023
| +50% | +$365K |
|
1779
PUT
MKS Inc
MKSI
$22.2B
| $1.11M | ﹤0.01% |
139
-12
| -8% | -$1.1K |
|
|
TELL
1780
PUT
DELISTED
Tellurian Inc.
TELL
| $1.11M | ﹤0.01% |
1,243
+874
| +237% | +$7.2K |
|
1781
CALL
Wolfspeed
WOLF
$1.2B
| $1.11M | ﹤0.01% |
294
+64
| +28% | +$2.91K |
|
1782
CALL
Genesis Energy
GEL
$1.84B
| $1.11M | ﹤0.01% |
468
+236
| +102% | +$5.56K |
|
1783
PUT
RBC Bearings
RBC
$18.8B
| $1.11M | ﹤0.01% |
+74
| New | +$10.7K |
|
1784
PUT
Progress Software
PRGS
$1.55B
| $1.11M | ﹤0.01% |
315
+303
| +2,525% | +$12K |
|
|
APU
1785
CALL
DELISTED
AmeriGas Partners, L.P.
APU
| $1.11M | ﹤0.01% |
281
-46
| -14% | -$1.89K |
|
1786
PUT
Logitech
LOGI
$15.2B
| $1.11M | ﹤0.01% |
248
+174
| +235% | +$8.08K |
|
1787
CALL
Bank OZK
OZK
$5.49B
| $1.11M | ﹤0.01% |
292
+235
| +412% | +$9.65K |
|
1788
CACI
CACI
$10.8B
| $1.1M | ﹤0.01% |
+5,991
| New | +$1.11M |
|
1789
Chefs' Warehouse
CHEF
$3.87B
| $1.1M | ﹤0.01% |
+30,347
| New | +$937K |
|
1790
PUT
Brinker International
EAT
$8.02B
| $1.1M | ﹤0.01% |
236
+10
| +4% | +$466 |
|
1791
CALL
Insmed
INSM
$23.2B
| $1.1M | ﹤0.01% |
545
+176
| +48% | +$3.97K |
|
|
SRCL
1792
CALL
DELISTED
Stericycle Inc
SRCL
| $1.1M | ﹤0.01% |
187
+171
| +1,069% | +$10.9K |
|
1793
PUT
Star Bulk Carriers
SBLK
$3.14B
| $1.09M | ﹤0.01% |
758
+546
| +258% | +$7.07K |
|
1794
PUT
Fate Therapeutics
FATE
$281M
| $1.09M | ﹤0.01% |
671
+131
| +24% | +$1.55K |
|
|
SLCA
1795
PUT
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $1.09M | ﹤0.01% |
579
-215
| -27% | -$4.99K |
|
|
GMLP
1796
PUT
DELISTED
Golar LNG Partners LP
GMLP
| $1.09M | ﹤0.01% |
761
+734
| +2,719% | +$10.8K |
|
1797
PUT
Invesco CurrencyShares British Pound Sterling Trust
FXB
$76.9M
| $1.09M | ﹤0.01% |
86
-74
| -46% | -$9.36K |
|
1798
Hain Celestial
HAIN
$47.8M
| $1.09M | ﹤0.01% |
40,095
+17,932
| +81% | +$511K |
|
1799
CALL
Philips
PHG
$25.4B
| $1.09M | ﹤0.01% |
308
-60
| -16% | -$2.05K |
|
1800
CALL
Sunoco
SUN
$14.2B
| $1.09M | ﹤0.01% |
368
+245
| +199% | +$6.6K |
|
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.