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 | |
|---|---|---|---|---|---|---|
|
1
Broadcom
AVGO
$1.84T
| $38.5M | 3.07% |
+2,493,400
| New | +$33.7M |
|
2
CALL
Amazon
AMZN
$2.66T
| $32.4M | 2.58% |
100,460
+18,080
| +22% | +$513K |
|
3
CALL
Meta Platforms (Facebook)
META
$1.63T
| $21.4M | 1.7% |
15,082
+3,184
| +27% | +$336K |
|
4
CALL
State Street SPDR S&P 500 ETF Trust
SPY
$787B
| $20.3M | 1.62% |
23,715
+13,331
| +128% | +$2.6M |
|
5
Alphabet (Google) Class C
GOOG
$4.22T
| $20.1M | 1.6% |
539,920
+186,280
| +53% | +$6.67M |
|
|
6
SPDR Gold Trust
GLD
$132B
| $18.5M | 1.47% |
+156,910
| New | +$17.8M |
|
7
PUT
Bausch Health
BHC
$1.69B
| $17.9M | 1.42% |
11,589
+5,968
| +106% | +$441K |
|
|
QIHU
8
DELISTED
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
| $16.3M | 1.3% |
216,204
+115,358
| +114% | +$8.34M |
|
|
9
iShares MSCI Emerging Markets ETF
EEM
$28.9B
| $15.8M | 1.26% |
+460,204
| New | +$14.3M |
|
|
10
Meta Platforms (Facebook)
META
$1.63T
| $15.4M | 1.23% |
135,369
+57,496
| +74% | +$6.07M |
|
|
11
Citigroup
C
$223B
| $13.9M | 1.11% |
333,172
+208,178
| +167% | +$8.7M |
|
|
12
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27B
| $12.9M | 1.03% |
+49,052
| New | +$11.9M |
|
|
13
PUT
State Street SPDR S&P 500 ETF Trust
SPY
$787B
| $12.5M | 0.99% |
31,104
+9,947
| +47% | +$1.94M |
|
14
PUT
iShares S&P 100 ETF
OEF
$20.2B
| $10.8M | 0.86% |
58,100
+20,547
| +55% | +$1.79M |
|
15
CALL
Tesla
TSLA
$1.42T
| $10.3M | 0.82% |
88,005
+34,425
| +64% | +$453K |
|
|
16
CALL
Apple
AAPL
$4.81T
| $9.77M | 0.78% |
86,852
+39,524
| +84% | +$985K |
|
|
17
CALL
iShares S&P 100 ETF
OEF
$20.2B
| $9.64M | 0.77% |
40,189
+14,781
| +58% | +$1.29M |
|
|
18
CALL
Alphabet (Google) Class A
GOOGL
$4.24T
| $8.96M | 0.71% |
98,900
+7,520
| +8% | +$277K |
|
|
CNL
19
DELISTED
CLECO CRP (HOLDING CO)
CNL
| $8.13M | 0.65% |
147,363
+142,661
| +3,034% | +$7.25M |
|
|
TWX
20
DELISTED
Time Warner Inc
TWX
| $8.03M | 0.64% |
110,619
+27,860
| +34% | +$1.92M |
|
|
21
Booking.com
BKNG
$139B
| $7.76M | 0.62% |
150,600
-253,625
| -63% | -$12.1M |
|
22
Bank of America
BAC
$430B
| $7.62M | 0.61% |
563,804
+407,920
| +262% | +$5.51M |
|
|
UCD
23
PUT
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $7.57M | 0.6% |
14,685
+2,252
| +18% | +$62.3K |
|
24
PUT
Alibaba
BABA
$283B
| $7.36M | 0.59% |
5,411
-1,381
| -20% | -$97.2K |
|
25
Yum! Brands
YUM
$40.6B
| $6.86M | 0.55% |
116,559
+101,326
| +665% | +$5.32M |
|
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.