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 | |
|---|---|---|---|---|---|---|
226
PUT
IBM
IBM
$193B
| $1.01M | 0.08% |
4,543
+2,238
| +97% | +$286K |
|
227
Perrigo
PRGO
$1.47B
| $1M | 0.08% |
+7,853
| New | +$1.07M |
|
228
CALL
State Street SPDR NYSE Technology ETF
XNTK
$2.15B
| $1M | 0.08% |
6,656
-595
| -8% | -$29.3K |
|
229
JB Hunt Transport Services
JBHT
$27.5B
| $1M | 0.08% |
11,901
+6,615
| +125% | +$501K |
|
230
CALL
Goldman Sachs
GS
$323B
| $995K | 0.08% |
3,277
+557
| +20% | +$86.1K |
|
|
X
231
CALL
DELISTED
US Steel
X
| $974K | 0.08% |
3,840
+2,768
| +258% | +$27.6K |
|
232
PUT
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46.1B
| $973K | 0.08% |
3,285
+83
| +3% | +$13.8K |
|
233
CALL
Cisco
CSCO
$444B
| $972K | 0.08% |
3,032
+2,540
| +516% | +$65.3K |
|
|
ANAC
234
PUT
DELISTED
ANACOR PHARMACEUTICALS INC COM
ANAC
| $964K | 0.08% |
466
+301
| +182% | +$22.2K |
|
235
F5
FFIV
$22.6B
| $959K | 0.08% |
9,060
-3,393
| -27% | -$325K |
|
236
PUT
AT&T
T
$160B
| $944K | 0.08% |
11,405
+10,585
| +1,291% | +$293K |
|
237
Workday
WDAY
$32.8B
| $941K | 0.08% |
+12,248
| New | +$811K |
|
|
LKM
238
DELISTED
Link Motion Inc.
LKM
| $934K | 0.07% |
+204,125
| New | +$760K |
|
239
PUT
Puma Biotechnology
PBYI
$418M
| $931K | 0.07% |
173
+13
| +8% | +$587 |
|
|
240
CALL
Citigroup
C
$223B
| $927K | 0.07% |
8,084
+6,222
| +334% | +$260K |
|
241
Liberty Global Class C
LBTYK
$3.42B
| $927K | 0.07% |
28,456
+28,032
| +6,611% | +$853K |
|
|
VNET
242
VNET Group
VNET
$2.22B
| $921K | 0.07% |
46,156
-61,990
| -57% | -$1.18M |
|
|
SUNE
243
PUT
DELISTED
SUNEDISON, INC COM
SUNE
| $920K | 0.07% |
6,165
+3,576
| +138% | +$8.24K |
|
244
Pfizer
PFE
$142B
| $918K | 0.07% |
32,660
-192,774
| -86% | -$5.51M |
|
245
PUT
Skyworks Solutions
SWKS
$9.43B
| $916K | 0.07% |
1,641
+536
| +49% | +$36.4K |
|
246
CALL
Boeing
BA
$165B
| $909K | 0.07% |
1,943
+629
| +48% | +$78.1K |
|
247
Bunge Global
BG
$24.1B
| $907K | 0.07% |
16,016
+2,938
| +22% | +$168K |
|
|
SPLK
248
DELISTED
Splunk Inc
SPLK
| $905K | 0.07% |
18,499
+10,583
| +134% | +$476K |
|
249
CALL
American International
AIG
$41.4B
| $902K | 0.07% |
3,812
+3,089
| +427% | +$167K |
|
250
PUT
Kinder Morgan
KMI
$72.5B
| $900K | 0.07% |
5,239
+2,622
| +100% | +$42.9K |
|
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.