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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
Apple
AAPL
|
+$29.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$15.7M |
| 4 |
IBM
IBM
|
+$13.8M |
| 5 |
Baidu
BIDU
|
+$10.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$10.1M |
| 2 |
McDonald's
MCD
|
+$8.46M |
| 3 |
Ralph Lauren
RL
|
+$5.36M |
| 4 |
Intel
INTC
|
+$5.04M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.76M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 14.27% |
| 2 | Technology | 10.3% |
| 3 | Healthcare | 7.76% |
| 4 | Consumer Discretionary | 6.32% |
| 5 | Financials | 5.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
76
NXP Semiconductors
NXPI
$69B
| $2.64M | 0.22% |
+26,868
| New | +$2.76M |
|
|
77
PUT
Baidu
BIDU
$36.8B
| $2.6M | 0.22% |
3,074
+973
| +46% | +$199K |
|
78
Procter & Gamble
PG
$345B
| $2.59M | 0.22% |
33,117
-39,534
| -54% | -$3.18M |
|
79
CALL
AbbVie
ABBV
$452B
| $2.56M | 0.21% |
1,913
-227
| -11% | -$14.8K |
|
80
PUT
Micron Technology
MU
$1.1T
| $2.55M | 0.21% |
6,313
+4,239
| +204% | +$113K |
|
81
Western Digital
WDC
$189B
| $2.54M | 0.21% |
42,881
+5,054
| +13% | +$362K |
|
82
CALL
Cigna
CI
$76.8B
| $2.46M | 0.21% |
1,476
+1,340
| +985% | +$185K |
|
83
Melco Resorts & Entertainment
MLCO
$2.11B
| $2.42M | 0.2% |
123,052
+97,393
| +380% | +$2M |
|
|
TWC
84
DELISTED
TIME WARNER CABLE INC NEW COM STK
TWC
| $2.4M | 0.2% |
13,486
-3,449
| -20% | -$571K |
|
85
PUT
SPDR Gold Trust
GLD
$132B
| $2.37M | 0.2% |
922
-124
| -12% | -$14.2K |
|
86
T-Mobile US
TMUS
$206B
| $2.37M | 0.2% |
+61,210
| New | +$2.19M |
|
87
CALL
Skyworks Solutions
SWKS
$9.47B
| $2.32M | 0.19% |
1,573
-162
| -9% | -$16.4K |
|
88
Direxion Daily Small Cap Bull 3x ETF
TNA
$1.42B
| $2.3M | 0.19% |
+51,518
| New | +$2.33M |
|
89
PUT
Tesla
TSLA
$1.42T
| $2.27M | 0.19% |
57,495
-9,090
| -14% | -$144K |
|
90
PUT
Wynn Resorts
WYNN
$9.82B
| $2.2M | 0.18% |
1,268
+334
| +36% | +$37.7K |
|
91
American Tower
AMT
$76.1B
| $2.14M | 0.18% |
22,955
+14,202
| +162% | +$1.34M |
|
92
BP
BP
$110B
| $2.12M | 0.18% |
63,057
+52,323
| +487% | +$1.83M |
|
|
TYNS
93
CALL
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $2.08M | 0.17% |
8,945
+2,854
| +47% | +$86.5K |
|
94
Visa
V
$677B
| $2.07M | 0.17% |
+30,802
| New | +$2.09M |
|
|
KRFT
95
DELISTED
KRAFT FOODS GROUP INC COM STK (VA)
KRFT
| $2.02M | 0.17% |
+23,771
| New | +$2.05M |
|
|
TWTR
96
PUT
DELISTED
Twitter, Inc.
TWTR
| $2.01M | 0.17% |
3,208
+49
| +2% | +$2K |
|
97
First Solar
FSLR
$22.1B
| $2M | 0.17% |
42,655
+26,286
| +161% | +$1.47M |
|
98
Las Vegas Sands
LVS
$30.1B
| $2M | 0.17% |
37,984
+29,155
| +330% | +$1.56M |
|
99
Bausch Health
BHC
$1.69B
| $1.97M | 0.16% |
8,851
+5,026
| +131% | +$1.11M |
|
100
PUT
Biogen
BIIB
$30B
| $1.95M | 0.16% |
1,219
+110
| +10% | +$44.1K |
|
Similar funds
Simplex Trading's Q2 2015 Portfolio in Review
As of Q2 2015, Simplex Trading held 6,639 positions worth $1.19B, up 39% from $860M the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $279M of net new capital in Q2 2015, opening 1,607 new positions and adding to 1,829 existing holdings. Its largest new stake was IBM: 85,948 shares worth $13.4M.
By sector, the portfolio is most concentrated in Communication Services at 14% of assets, up from 7.8% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Intel, an estimated $5.04M trimmed.
- Simplex Trading's largest Q2 2015 buy was IBM: 85,948 shares worth $13.4M.
- Simplex Trading added most to Alphabet (Google) Class C in Q2 2015, an estimated $54.6M increase.
- Simplex Trading's biggest Q2 2015 reduction was Intel, cutting an estimated $5.04M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2015, selling an estimated $10.1M.
- Simplex Trading's ten largest holdings make up 20% of its $1.19B portfolio in Q2 2015.
- Simplex Trading opened 1,607 new positions and closed 1,438 in Q2 2015.
- Simplex Trading's portfolio value rose 39% quarter-over-quarter to $1.19B.
Based on Simplex Trading's 13F filing for Q2 2015, filed 8 Jul 2015.