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 | |
|---|---|---|---|---|---|---|
|
ALXN
851
PUT
DELISTED
Alexion Pharmaceuticals
ALXN
| $3.39M | 0.01% |
244
-330
| -57% | -$41.4K |
|
852
CALL
Travelers Companies
TRV
$77.6B
| $3.38M | 0.01% |
261
+120
| +85% | +$15.5K |
|
853
PUT
Boston Properties
BXP
$10.8B
| $3.38M | 0.01% |
275
+169
| +159% | +$21.5K |
|
854
CALL
Cars.com
CARS
$652M
| $3.38M | 0.01% |
1,224
+1,212
| +10,100% | +$33.9K |
|
855
CALL
Equinix
EQIX
$101B
| $3.38M | 0.01% |
78
-30
| -28% | -$13.1K |
|
856
CALL
Simon Property Group
SPG
$73.4B
| $3.38M | 0.01% |
191
-452
| -70% | -$80K |
|
857
CALL
Hasbro
HAS
$12.6B
| $3.37M | 0.01% |
321
+66
| +26% | +$6.61K |
|
858
VanEck Semiconductor ETF
SMH
$70.7B
| $3.37M | 0.01% |
63,320
+57,810
| +1,049% | +$3.07M |
|
|
DCH
859
CALL
Dauch Corp
DCH
$1.35B
| $3.37M | 0.01% |
1,932
+1,062
| +122% | +$18.3K |
|
|
KFYP
860
CALL
DELISTED
KraneShares CICC China Leaders 100 Index ETF
KFYP
| $3.37M | 0.01% |
714
+511
| +252% | +$15.8K |
|
|
I
861
PUT
DELISTED
INTELSAT S. A.
I
| $3.36M | 0.01% |
1,121
-979
| -47% | -$21.4K |
|
|
GRA
862
CALL
DELISTED
W.R. Grace & Co.
GRA
| $3.36M | 0.01% |
470
+288
| +158% | +$20.8K |
|
863
PUT
CF Industries
CF
$19.6B
| $3.35M | 0.01% |
616
-330
| -35% | -$15.9K |
|
|
SKX
864
PUT
DELISTED
Skechers
SKX
| $3.35M | 0.01% |
1,198
+757
| +172% | +$21.9K |
|
865
PUT
Hershey
HSY
$35B
| $3.35M | 0.01% |
328
+151
| +85% | +$14.9K |
|
|
ETFC
866
DELISTED
E*Trade Financial Corporation
ETFC
| $3.34M | 0.01% |
63,763
+37,389
| +142% | +$2.19M |
|
867
CALL
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$108M
| $3.33M | 0.01% |
1,316
+317
| +32% | +$7.34K |
|
868
CALL
Royal Gold
RGLD
$17.1B
| $3.33M | 0.01% |
432
+149
| +53% | +$12.3K |
|
|
SHNY
869
PUT
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $3.33M | 0.01% |
2,078
-120
| -5% | -$699 |
|
870
CALL
Incyte
INCY
$23.1B
| $3.32M | 0.01% |
481
+190
| +65% | +$13K |
|
871
PUT
Shake Shack
SHAK
$2.26B
| $3.31M | 0.01% |
526
+315
| +149% | +$19.1K |
|
872
PUT
Newmont
NEM
$102B
| $3.31M | 0.01% |
1,095
+832
| +316% | +$28.2K |
|
873
CALL
Corning
GLW
$133B
| $3.3M | 0.01% |
936
-43
| -4% | -$1.4K |
|
874
PUT
MetLife
MET
$60B
| $3.3M | 0.01% |
1,070
-725
| -40% | -$33.1K |
|
875
PUT
Blackstone
BX
$150B
| $3.29M | 0.01% |
863
-374
| -30% | -$13.5K |
|
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.