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 | |
|---|---|---|---|---|---|---|
101
PUT
Goldman Sachs
GS
$325B
| $2.23M | 0.18% |
3,385
+1,295
| +62% | +$200K |
|
102
Signet Jewelers
SIG
$3.56B
| $2.16M | 0.17% |
17,396
-11,415
| -40% | -$1.3M |
|
103
American Airlines Group
AAL
$9.96B
| $2.14M | 0.17% |
52,163
-155,710
| -75% | -$6.27M |
|
|
CIT
104
DELISTED
CIT Group Inc.
CIT
| $2.14M | 0.17% |
+68,894
| New | +$2.17M |
|
105
CALL
iShares MSCI Australia ETF
EWA
$1.35B
| $2.14M | 0.17% |
10,160
+3,318
| +48% | +$59.7K |
|
106
Salesforce
CRM
$137B
| $2.13M | 0.17% |
+28,789
| New | +$1.98M |
|
107
CALL
FedEx
FDX
$76B
| $2.12M | 0.17% |
1,734
+701
| +68% | +$97.5K |
|
108
Ralph Lauren
RL
$22.9B
| $2.07M | 0.16% |
+21,498
| New | +$2.11M |
|
109
CALL
Direxion Daily Technology Bull 3x ETF
TECL
$5.56B
| $2.07M | 0.16% |
62,690
+26,230
| +72% | +$83.9K |
|
110
PUT
Gilead Sciences
GILD
$164B
| $2.04M | 0.16% |
3,789
+4
| +0.1% | +$361 |
|
|
ATVI
111
DELISTED
Activision Blizzard
ATVI
| $2.02M | 0.16% |
59,831
+53,216
| +804% | +$1.75M |
|
112
PUT
State Street Materials Select Sector SPDR ETF
XLB
$8.44B
| $2M | 0.16% |
28,960
+2,492
| +9% | +$51.6K |
|
113
TripAdvisor
TRIP
$1.6B
| $2M | 0.16% |
30,077
-12,581
| -29% | -$833K |
|
114
CALL
Capri Holdings
CPRI
$1.84B
| $2M | 0.16% |
838
+10
| +1% | +$494 |
|
|
PPLC
115
CALL
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $1.98M | 0.16% |
4,456
+771
| +21% | +$18.9K |
|
116
CALL
Invesco QQQ Trust
QQQ
$470B
| $1.98M | 0.16% |
6,489
+3,100
| +91% | +$322K |
|
117
PUT
State Street SPDR NYSE Technology ETF
XNTK
$2.14B
| $1.98M | 0.16% |
9,820
+3,733
| +61% | +$184K |
|
118
CALL
Chevron
CVX
$383B
| $1.94M | 0.15% |
3,599
+847
| +31% | +$74.1K |
|
|
119
CALL
Gilead Sciences
GILD
$164B
| $1.94M | 0.15% |
5,996
+3,635
| +154% | +$328K |
|
120
Teva Pharmaceuticals
TEVA
$35.8B
| $1.94M | 0.15% |
+36,284
| New | +$2.13M |
|
|
121
CALL
Broadcom
AVGO
$1.83T
| $1.93M | 0.15% |
11,810
+2,580
| +28% | +$34.9K |
|
122
PUT
Devon Energy
DVN
$52B
| $1.92M | 0.15% |
3,448
+1,869
| +118% | +$45.5K |
|
123
United Airlines
UAL
$38.1B
| $1.92M | 0.15% |
32,007
+29,044
| +980% | +$1.54M |
|
|
PX
124
DELISTED
Praxair Inc
PX
| $1.91M | 0.15% |
+16,654
| New | +$1.74M |
|
|
PPLC
125
PUT
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $1.9M | 0.15% |
3,326
+1,917
| +136% | +$46.9K |
|
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.