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 | |
|---|---|---|---|---|---|---|
51
CALL
Berkshire Hathaway Class B
BRK.B
$1.06T
| $3.66M | 0.29% |
1,979
-962
| -33% | -$128K |
|
52
PUT
Amazon
AMZN
$2.66T
| $3.64M | 0.29% |
119,420
+6,340
| +6% | +$180K |
|
53
PUT
ProShares UltraShort Health Care
RXD
$3.35M
| $3.55M | 0.28% |
736
-26
| -3% | -$5.74K |
|
54
Delta Air Lines
DAL
$55.7B
| $3.53M | 0.28% |
72,546
+54,282
| +297% | +$2.54M |
|
55
Mastercard
MA
$476B
| $3.51M | 0.28% |
+37,120
| New | +$3.28M |
|
56
CALL
Alibaba
BABA
$283B
| $3.5M | 0.28% |
8,445
-916
| -10% | -$64.5K |
|
57
Charter Communications
CHTR
$15.7B
| $3.45M | 0.27% |
17,025
+14,518
| +579% | +$2.61M |
|
58
IBM
IBM
$198B
| $3.43M | 0.27% |
23,700
+12,007
| +103% | +$1.53M |
|
|
UCD
59
CALL
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $3.41M | 0.27% |
13,315
+3,430
| +35% | +$94.9K |
|
60
PUT
Alphabet (Google) Class A
GOOGL
$4.24T
| $3.33M | 0.27% |
102,560
-2,360
| -2% | -$86.9K |
|
61
WisdomTree Japan Hedged Equity Fund
DXJ
$7.21B
| $3.27M | 0.26% |
+74,759
| New | +$3.3M |
|
|
62
PUT
Chipotle Mexican Grill
CMG
$42.7B
| $3.26M | 0.26% |
58,100
-15,900
| -21% | -$151K |
|
63
PUT
Invesco QQQ Trust
QQQ
$471B
| $3.21M | 0.26% |
8,530
+2,835
| +50% | +$294K |
|
|
64
PUT
Citigroup
C
$223B
| $3.21M | 0.26% |
10,179
+6,248
| +159% | +$261K |
|
65
CALL
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $3.18M | 0.25% |
6,857
+3,502
| +104% | +$583K |
|
|
VXX
66
PUT
DELISTED
iPath S&P 500 VIX Short-Term Futures ETN due 1/30/2019
VXX
| $3.15M | 0.25% |
674
+210
| +45% | +$79.1K |
|
67
General Mills
GIS
$19.8B
| $3.15M | 0.25% |
+49,685
| New | +$2.89M |
|
68
PUT
Biogen
BIIB
$30B
| $3.14M | 0.25% |
957
-392
| -29% | -$104K |
|
69
AB InBev
BUD
$158B
| $3.12M | 0.25% |
25,002
+24,061
| +2,557% | +$2.86M |
|
70
Baidu
BIDU
$36.8B
| $3.07M | 0.25% |
16,101
-118
| -0.7% | -$20.1K |
|
71
Johnson & Johnson
JNJ
$603B
| $2.96M | 0.24% |
+27,378
| New | +$2.83M |
|
72
PUT
Netflix
NFLX
$286B
| $2.92M | 0.23% |
78,200
-42,490
| -35% | -$417K |
|
73
VanEck Gold Miners ETF
GDX
$22.7B
| $2.91M | 0.23% |
145,922
-72,159
| -33% | -$1.24M |
|
74
Goldman Sachs
GS
$320B
| $2.86M | 0.23% |
18,218
-20,605
| -53% | -$3.19M |
|
75
Mondelez International
MDLZ
$76.8B
| $2.82M | 0.22% |
+70,215
| New | +$2.86M |
|
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.