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 | |
|---|---|---|---|---|---|---|
2026
Advanced Micro Devices
AMD
$851B
| $32K | ﹤0.01% |
13,743
-112,669
| -89% | -$273K |
|
|
AMRN
2027
Amarin Corp
AMRN
$284M
| $32K | ﹤0.01% |
657
-177
| -21% | -$7.97K |
|
2028
PUT
Actinium Pharmaceuticals
ATNM
$27M
| $32K | ﹤0.01% |
+3
| New | +$256 |
|
2029
Brunswick
BC
$5.19B
| $32K | ﹤0.01% |
641
+391
| +156% | +$20.4K |
|
2030
Clearfield
CLFD
$421M
| $32K | ﹤0.01% |
+2,031
| New | +$30.4K |
|
2031
PUT
Canadian National Railway
CNI
$78.3B
| $32K | ﹤0.01% |
86
+35
| +69% | +$2.19K |
|
2032
CVR Energy
CVI
$3.36B
| $32K | ﹤0.01% |
+861
| New | +$33.9K |
|
2033
HSBC
HSBC
$355B
| $32K | ﹤0.01% |
+815
| New | +$33.9K |
|
2034
Jack Henry & Associates
JKHY
$10.7B
| $32K | ﹤0.01% |
+505
| New | +$33.5K |
|
2035
PUT
Coca-Cola
KO
$354B
| $32K | ﹤0.01% |
133
-592
| -82% | -$24.1K |
|
2036
Lands' End
LE
$361M
| $32K | ﹤0.01% |
1,299
-697
| -35% | -$20K |
|
2037
OFG Bancorp
OFG
$2.21B
| $32K | ﹤0.01% |
3,070
+3,046
| +12,692% | +$43.7K |
|
2038
PUT
Open Text
OTEX
$5.43B
| $32K | ﹤0.01% |
76
+40
| +111% | +$964 |
|
2039
CALL
Polaris
PII
$4.15B
| $32K | ﹤0.01% |
65
+8
| +14% | +$1.15K |
|
2040
Pixelworks
PXLW
$38.8M
| $32K | ﹤0.01% |
467
+114
| +32% | +$7.16K |
|
2041
Sonida Senior Living
SNDA
$1.97B
| $32K | ﹤0.01% |
88
-294
| -77% | -$114K |
|
2042
CALL
Synaptics
SYNA
$4.41B
| $32K | ﹤0.01% |
118
+84
| +247% | +$7.67K |
|
2043
iShares MSCI Thailand ETF
THD
$361M
| $32K | ﹤0.01% |
+441
| New | +$34.7K |
|
2044
CALL
TJX Companies
TJX
$170B
| $32K | ﹤0.01% |
214
+150
| +234% | +$4.99K |
|
2045
Vince Holding Corp
VNCE
$76.2M
| $32K | ﹤0.01% |
271
-287
| -51% | -$48K |
|
2046
CALL
Vodafone
VOD
$34.9B
| $32K | ﹤0.01% |
518
+189
| +57% | +$6.81K |
|
|
GAP
2047
PUT
The Gap Inc
GAP
$6.84B
| $32K | ﹤0.01% |
+77
| New | +$3.04K |
|
|
XONE
2048
PUT
DELISTED
The ExOne Company
XONE
| $32K | ﹤0.01% |
19
-178
| -90% | -$2.38K |
|
|
JCP
2049
PUT
DELISTED
J.C. Penney Company, Inc.
JCP
| $32K | ﹤0.01% |
93
+39
| +72% | +$336 |
|
|
ONCE
2050
CALL
DELISTED
Spark Therapeutics, Inc. Common Stock
ONCE
| $32K | ﹤0.01% |
35
-24
| -41% | -$1.59K |
|
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.