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 | |
|---|---|---|---|---|---|---|
1726
CALL
Equifax
EFX
$20.3B
| $65K | 0.01% |
42
+40
| +2,000% | +$4.21K |
|
1727
Enerpac Tool Group
EPAC
$1.77B
| $65K | 0.01% |
2,660
+1,394
| +110% | +$32.1K |
|
1728
iShares US Home Construction ETF
ITB
$2.41B
| $65K | 0.01% |
2,429
+1,238
| +104% | +$30.4K |
|
1729
CALL
Orion Group Holdings
ORN
$514M
| $65K | 0.01% |
+244
| New | +$960 |
|
1730
PUT
Prospect Capital
PSEC
$1.06B
| $65K | 0.01% |
1,450
+1,175
| +427% | +$7.81K |
|
1731
PUT
Suncor Energy
SU
$77.7B
| $65K | 0.01% |
607
+348
| +134% | +$8.42K |
|
|
VNET
1732
PUT
VNET Group
VNET
$2.05B
| $65K | 0.01% |
426
-1,566
| -79% | -$29.9K |
|
|
ONIT
1733
PUT
Onity Group
ONIT
$333M
| $65K | 0.01% |
12
-17
| -59% | -$1.17K |
|
|
CEQP
1734
PUT
DELISTED
Crestwood Equity Partners LP
CEQP
| $65K | 0.01% |
213
+77
| +57% | +$883 |
|
|
CERN
1735
DELISTED
Cerner Corp
CERN
| $65K | 0.01% |
+1,230
| New | +$67K |
|
|
NBL
1736
CALL
DELISTED
Noble Energy, Inc.
NBL
| $65K | 0.01% |
374
+119
| +47% | +$3.64K |
|
|
VIAB
1737
PUT
DELISTED
Viacom Inc. Class B
VIAB
| $65K | 0.01% |
303
-666
| -69% | -$26.5K |
|
|
EDE
1738
DELISTED
Empire District Electric
EDE
| $65K | 0.01% |
+1,996
| New | +$62.1K |
|
|
TIVO
1739
CALL
DELISTED
TIVO INC
TIVO
| $65K | 0.01% |
+468
| New | +$3.76K |
|
1740
VanEck Biotech ETF
BBH
$396M
| $64K | 0.01% |
625
-537
| -46% | -$56K |
|
1741
PUT
CorMedix
CRMD
$617M
| $64K | 0.01% |
28
-30
| -52% | -$291 |
|
1742
Commault Systems
CVLT
$5.89B
| $64K | 0.01% |
+1,498
| New | +$55.4K |
|
1743
CALL
L3Harris
LHX
$55.9B
| $64K | 0.01% |
366
+243
| +198% | +$19.4K |
|
1744
CALL
MPLX
MPLX
$59.5B
| $64K | 0.01% |
313
+23
| +8% | +$624 |
|
1745
CALL
Shake Shack
SHAK
$2.3B
| $64K | 0.01% |
234
-71
| -23% | -$2.56K |
|
1746
CALL
TSMC
TSM
$2.09T
| $64K | 0.01% |
261
+213
| +444% | +$4.98K |
|
|
CKEC
1747
CALL
DELISTED
Carmike Cinemas Inc
CKEC
| $64K | 0.01% |
+272
| New | +$6.59K |
|
1748
Honda
HMC
$36.5B
| $63K | 0.01% |
+2,324
| New | +$63.8K |
|
1749
Huntsman Corp
HUN
$2.24B
| $63K | 0.01% |
+4,738
| New | +$48.9K |
|
1750
NovaGold Resources
NG
$2.6B
| $63K | 0.01% |
12,527
+2,272
| +22% | +$10.5K |
|
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.