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
| 1 |
Broadcom
AVGO
|
$38.5M |
| 2 |
SPDR Gold Trust
GLD
|
$18.5M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
$15.8M |
| 4 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
$12.9M |
| 5 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
$8.72M |
Top Sells
| 1 |
Apple
AAPL
|
$36.1M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
$14.9M |
| 4 |
Walt Disney
DIS
|
$14.5M |
| 5 |
Alibaba
BABA
|
$13.3M |
Sector Composition
| 1 | Technology | 15.08% |
| 2 | Communication Services | 13.51% |
| 3 | Consumer Discretionary | 9.68% |
| 4 | Healthcare | 8.98% |
| 5 | Financials | 8.3% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
1
Broadcom
AVGO
$1.4T
| $38.5M | 3.07% | +249,340 | New | +$38.5M |
|
2
Alphabet (Google) Class C
GOOG
$2.58T
| $20.1M | 1.6% | 26,996 +9,314 | +53% | +$6.94M |
|
|
3
SPDR Gold Trust
GLD
$107B
| $18.5M | 1.47% | +156,910 | New | +$18.5M |
|
|
QIHU
4
DELISTED
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
| $16.3M | 1.3% | 216,204 +115,358 | +114% | +$8.72M |
|
|
5
iShares MSCI Emerging Markets ETF
EEM
$19B
| $15.8M | 1.26% | +460,204 | New | +$15.8M |
|
6
Meta Platforms (Facebook)
META
$1.86T
| $15.4M | 1.23% | 135,369 +57,496 | +74% | +$6.56M |
|
7
Citigroup
C
$178B
| $13.9M | 1.11% | 333,172 +208,178 | +167% | +$8.69M |
|
|
8
SPDR S&P MidCap 400 ETF Trust
MDY
$23.7B
| $12.9M | 1.03% | +49,052 | New | +$12.9M |
|
|
CNL
9
DELISTED
CLECO CRP (HOLDING CO)
CNL
| $8.14M | 0.65% | 147,363 +142,661 | +3,034% | +$7.88M |
|
|
TWX
10
DELISTED
Time Warner Inc
TWX
| $8.03M | 0.64% | 110,619 +27,860 | +34% | +$2.02M |
|
11
Booking.com
BKNG
$181B
| $7.76M | 0.62% | 6,024 -10,145 | -63% | -$13.1M |
|
12
Bank of America
BAC
$376B
| $7.62M | 0.61% | 563,804 +407,920 | +262% | +$5.51M |
|
13
Yum! Brands
YUM
$40.8B
| $6.86M | 0.55% | 83,795 +72,844 | +665% | +$5.96M |
|
14
iShares Biotechnology ETF
IBB
$5.6B
| $6.75M | 0.54% | +25,869 | New | +$6.75M |
|
|
15
Alphabet (Google) Class A
GOOGL
$2.57T
| $6.62M | 0.53% | 8,678 +1,578 | +22% | +$1.2M |
|
16
Bausch Health
BHC
$2.74B
| $6.6M | 0.53% | 250,955 +52,156 | +26% | +$1.37M |
|
|
MJN
17
DELISTED
Mead Johnson Nutrition Company
MJN
| $6.16M | 0.49% | 72,469 +34,428 | +91% | +$2.93M |
|
|
TWTR
18
DELISTED
Twitter, Inc.
TWTR
| $5.57M | 0.44% | 336,305 +32,682 | +11% | +$541K |
|
19
Amgen
AMGN
$155B
| $5.14M | 0.41% | +34,305 | New | +$5.14M |
|
20
Herbalife
HLF
$1.01B
| $5.1M | 0.41% | 82,791 +55,299 | +201% | +$3.4M |
|
|
ADT
21
DELISTED
ADT CORP
ADT
| $4.74M | 0.38% | 114,788 +108,644 | +1,768% | +$4.48M |
|
22
Intuitive Surgical
ISRG
$170B
| $4.67M | 0.37% | +7,775 | New | +$4.67M |
|
23
Wynn Resorts
WYNN
$13.2B
| $4.63M | 0.37% | 49,603 -45,827 | -48% | -$4.28M |
|
24
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
$17.8B
| $4.51M | 0.36% | 55,243 +6,135 | +12% | +$501K |
|
25
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$690M
| $4.42M | 0.35% | 228,672 +187,825 | +460% | +$3.63M |
|