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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
626
PUT
HSBC
HSBC
$354B
| $322K | 0.03% |
2,095
+1,753
| +513% | +$51.8K |
|
|
BIG
627
DELISTED
Big Lots, Inc.
BIG
| $322K | 0.03% |
7,123
+1,103
| +18% | +$44.2K |
|
628
PUT
American International
AIG
$41.5B
| $321K | 0.03% |
1,935
-347
| -15% | -$18.7K |
|
|
RTN
629
CALL
DELISTED
Raytheon Company
RTN
| $320K | 0.03% |
988
+288
| +41% | +$35.5K |
|
|
AET
630
PUT
DELISTED
Aetna Inc
AET
| $319K | 0.03% |
764
+105
| +16% | +$11.2K |
|
631
Howard Hughes
HHH
$3.96B
| $316K | 0.03% |
3,132
+1,057
| +51% | +$97.1K |
|
632
KLA
KLAC
$280B
| $315K | 0.03% |
+43,300
| New | +$291K |
|
|
DF
633
DELISTED
Dean Foods Company
DF
| $314K | 0.03% |
18,172
+2,482
| +16% | +$46.9K |
|
634
Spectrum Brands
SPB
$2.05B
| $313K | 0.02% |
+2,870
| New | +$283K |
|
635
UBS Group
UBS
$173B
| $313K | 0.02% |
19,559
+5,977
| +44% | +$97.1K |
|
636
State Street SPDR S&P Homebuilders ETF
XHB
$1.71B
| $311K | 0.02% |
9,211
+4,556
| +98% | +$142K |
|
|
TWTR
637
CALL
DELISTED
Twitter, Inc.
TWTR
| $310K | 0.02% |
5,368
-784
| -13% | -$13.7K |
|
|
DHC
638
Diversified Healthcare Trust
DHC
$2.25B
| $309K | 0.02% |
17,297
-3,403
| -16% | -$53.1K |
|
639
CALL
Hilton Worldwide
HLT
$73.8B
| $309K | 0.02% |
312
+239
| +327% | +$14.2K |
|
640
Ashland
ASH
$3.13B
| $308K | 0.02% |
5,744
+4,058
| +241% | +$195K |
|
641
CALL
Blackstone
BX
$150B
| $308K | 0.02% |
2,710
+1,358
| +100% | +$35.9K |
|
642
PUT
Palo Alto Networks
PANW
$273B
| $308K | 0.02% |
5,430
+318
| +6% | +$7.82K |
|
643
CALL
United Airlines
UAL
$38.1B
| $308K | 0.02% |
1,244
+706
| +131% | +$37.5K |
|
644
CALL
United Rentals
URI
$64.8B
| $308K | 0.02% |
550
+32
| +6% | +$1.78K |
|
|
DRII
645
DELISTED
DIAMOND RESORTS INTL, INC
DRII
| $308K | 0.02% |
+12,712
| New | +$272K |
|
|
TUMI
646
DELISTED
TUMI HLDGS INC COM
TUMI
| $307K | 0.02% |
+11,454
| New | +$233K |
|
647
CALL
ASML
ASML
$692B
| $306K | 0.02% |
215
+190
| +760% | +$17.1K |
|
648
PUT
RTX Corp
RTX
$262B
| $305K | 0.02% |
2,295
+1,238
| +117% | +$71.8K |
|
649
PUT
Starbucks
SBUX
$119B
| $305K | 0.02% |
1,628
+758
| +87% | +$44.1K |
|
650
CALL
Costco
COST
$411B
| $304K | 0.02% |
575
+50
| +10% | +$7.58K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.