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 | |
|---|---|---|---|---|---|---|
1326
CALL
Exelon
EXC
$48.6B
| $103K | 0.01% |
529
-85
| -14% | -$1.9K |
|
1327
iShare MSCI Eurozone ETF
EZU
$9.46B
| $103K | 0.01% |
3,007
+35
| +1% | +$1.15K |
|
|
GREK
1328
Global X MSCI Greece ETF
GREK
$290M
| $103K | 0.01% |
4,573
+1,135
| +33% | +$23.5K |
|
1329
CALL
Nabors Industries
NBR
$1.23B
| $103K | 0.01% |
15
+12
| +400% | +$4.46K |
|
1330
CALL
Universal Display
OLED
$3.72B
| $103K | 0.01% |
193
-113
| -37% | -$5.52K |
|
1331
CALL
Royal Bank of Canada
RY
$292B
| $103K | 0.01% |
342
+8
| +2% | +$415 |
|
1332
CALL
Targa Resources
TRGP
$61.2B
| $103K | 0.01% |
484
+381
| +370% | +$9.09K |
|
|
WBT
1333
DELISTED
Welbilt, Inc.
WBT
| $103K | 0.01% |
+7,000
| New | +$102K |
|
1334
PUT
Delek US
DK
$3.86B
| $102K | 0.01% |
100
-157
| -61% | -$2.53K |
|
1335
PUT
International Paper
IP
$20.4B
| $102K | 0.01% |
1,337
+1,080
| +420% | +$37.6K |
|
1336
PUT
Liberty Latin America Class C
LILAK
$1.51B
| $102K | 0.01% |
496
+443
| +836% | +$14.1K |
|
1337
PUT
PepsiCo
PEP
$186B
| $102K | 0.01% |
1,428
+1,007
| +239% | +$99.5K |
|
1338
PJT Partners
PJT
$4.3B
| $102K | 0.01% |
4,252
+4,214
| +11,089% | +$109K |
|
|
RGLS
1339
DELISTED
Regulus Therapeutics
RGLS
| $102K | 0.01% |
123
+94
| +324% | +$74.8K |
|
|
CIT
1340
PUT
DELISTED
CIT Group Inc.
CIT
| $102K | 0.01% |
741
+287
| +63% | +$9.04K |
|
|
FL
1341
PUT
DELISTED
Foot Locker
FL
| $101K | 0.01% |
506
+187
| +59% | +$12.1K |
|
1342
PUT
MPLX
MPLX
$59.4B
| $101K | 0.01% |
139
-97
| -41% | -$2.63K |
|
1343
PUT
State Street
STT
$51B
| $101K | 0.01% |
375
+280
| +295% | +$15.9K |
|
|
FLG
1344
CALL
Flagstar Bank National Association
FLG
$5.84B
| $101K | 0.01% |
+194
| New | +$8.99K |
|
|
SWN
1345
CALL
DELISTED
Southwestern Energy Company
SWN
| $101K | 0.01% |
1,263
+915
| +263% | +$7.01K |
|
|
CAMP
1346
DELISTED
CalAmp Corp.
CAMP
| $101K | 0.01% |
+246
| New | +$101K |
|
|
ZEN
1347
PUT
DELISTED
ZENDESK INC
ZEN
| $101K | 0.01% |
312
+212
| +212% | +$4.31K |
|
|
SONC
1348
DELISTED
Sonic Corp
SONC
| $101K | 0.01% |
+2,884
| New | +$86.1K |
|
|
NRF
1349
DELISTED
NorthStar Realty Finance Corp.
NRF
| $101K | 0.01% |
7,744
+3,730
| +93% | +$45.8K |
|
1350
CALL
Dick's Sporting Goods
DKS
$18.4B
| $100K | 0.01% |
556
+499
| +875% | +$20.3K |
|
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.