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 | |
|---|---|---|---|---|---|---|
|
176
CALL
Walt Disney
DIS
$168B
| $1.29M | 0.1% |
4,895
-670
| -12% | -$64.7K |
|
|
KS
177
DELISTED
KapStone Paper and Pack Corp.
KS
| $1.29M | 0.1% |
93,033
+87,609
| +1,615% | +$1.19M |
|
178
State Street SPDR S&P Retail ETF
XRT
$372M
| $1.28M | 0.1% |
27,647
+21,876
| +379% | +$928K |
|
|
ENDP
179
DELISTED
Endo International plc
ENDP
| $1.26M | 0.1% |
+44,766
| New | +$2.11M |
|
180
PUT
Freeport-McMoran
FCX
$92.5B
| $1.25M | 0.1% |
7,042
+3,300
| +88% | +$23.2K |
|
181
ProShares UltraShort Silver
ZSL
$87M
| $1.24M | 0.1% |
+157
| New | +$1.37M |
|
|
VXX
182
CALL
DELISTED
iPath S&P 500 VIX Short-Term Futures ETN due 1/30/2019
VXX
| $1.23M | 0.1% |
448
-7
| -2% | -$2.64K |
|
183
Thermo Fisher Scientific
TMO
$193B
| $1.21M | 0.1% |
8,562
-7,669
| -47% | -$1.03M |
|
184
Markel Group
MKL
$24.4B
| $1.2M | 0.1% |
1,346
+239
| +22% | +$205K |
|
|
FIT
185
PUT
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $1.19M | 0.09% |
1,570
-1,447
| -48% | -$23K |
|
186
Under Armour
UAA
$3.13B
| $1.19M | 0.09% |
28,201
-23,246
| -45% | -$911K |
|
187
ProShares UltraShort NASDAQ Biotechnology
BIS
$2.27M
| $1.19M | 0.09% |
+3,405
| New | +$1.18M |
|
|
MDVN
188
CALL
DELISTED
MEDIVATION, INC.
MDVN
| $1.18M | 0.09% |
1,747
+1,440
| +469% | +$52.2K |
|
189
Toronto Dominion Bank
TD
$201B
| $1.17M | 0.09% |
27,100
+21,851
| +416% | +$843K |
|
190
PUT
United States Oil Fund
USO
$2.37B
| $1.16M | 0.09% |
459
+53
| +13% | +$3.96K |
|
191
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.84B
| $1.16M | 0.09% |
44,612
+7,402
| +20% | +$187K |
|
192
Zimmer Biomet
ZBH
$17.1B
| $1.16M | 0.09% |
+11,162
| New | +$1.08M |
|
193
CALL
Lowe's Companies
LOW
$114B
| $1.15M | 0.09% |
1,260
+780
| +163% | +$55K |
|
194
iShares Russell 2000 ETF
IWM
$81.9B
| $1.15M | 0.09% |
+10,374
| New | +$1.07M |
|
|
OUTR
195
DELISTED
OUTERWALL INC
OUTR
| $1.15M | 0.09% |
+31,005
| New | +$1.02M |
|
196
CALL
Intel
INTC
$532B
| $1.14M | 0.09% |
5,374
+3,758
| +233% | +$115K |
|
|
197
CALL
Freeport-McMoran
FCX
$92.5B
| $1.13M | 0.09% |
6,350
+3,425
| +117% | +$24.1K |
|
198
PUT
Wynn Resorts
WYNN
$9.79B
| $1.13M | 0.09% |
2,661
+895
| +51% | +$66.1K |
|
|
CMA
199
DELISTED
Comerica
CMA
| $1.13M | 0.09% |
+29,844
| New | +$1.08M |
|
|
ALR
200
DELISTED
Alere Inc
ALR
| $1.12M | 0.09% |
22,212
+20,474
| +1,178% | +$981K |
|
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.