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 | |
|---|---|---|---|---|---|---|
326
PUT
Expedia Group
EXPE
$31.3B
| $686K | 0.05% |
932
+319
| +52% | +$34K |
|
327
CALL
Amgen
AMGN
$198B
| $685K | 0.05% |
1,813
+652
| +56% | +$96.9K |
|
328
PUT
Blackstone
BX
$150B
| $678K | 0.05% |
5,413
+4,137
| +324% | +$109K |
|
|
AGN
329
CALL
DELISTED
Allergan plc
AGN
| $678K | 0.05% |
751
-944
| -56% | -$270K |
|
330
CALL
ProShares UltraShort Health Care
RXD
$3.38M
| $674K | 0.05% |
1,158
-30
| -3% | -$6.62K |
|
|
ZEN
331
DELISTED
ZENDESK INC
ZEN
| $669K | 0.05% |
31,988
+29,471
| +1,171% | +$599K |
|
332
PUT
Cisco
CSCO
$442B
| $666K | 0.05% |
1,952
+1,506
| +338% | +$38.7K |
|
333
Goodyear
GT
$2.14B
| $662K | 0.05% |
+20,087
| New | +$605K |
|
|
EGN
334
DELISTED
Energen
EGN
| $661K | 0.05% |
18,071
+17,883
| +9,512% | +$554K |
|
335
Synaptics
SYNA
$4.71B
| $660K | 0.05% |
8,286
+4,007
| +94% | +$304K |
|
336
PUT
Western Digital
WDC
$192B
| $660K | 0.05% |
1,184
+130
| +12% | +$4.65K |
|
337
CALL
APA Corp
APA
$12.8B
| $659K | 0.05% |
2,306
+1,241
| +117% | +$51.6K |
|
338
ProShares Ultra Energy
DIG
$69.9M
| $659K | 0.05% |
17,066
+13,878
| +435% | +$474K |
|
339
PUT
Caterpillar
CAT
$410B
| $658K | 0.05% |
4,571
-423
| -8% | -$28.4K |
|
340
CALL
Trip.com Group
TCOM
$26.8B
| $657K | 0.05% |
1,859
+275
| +17% | +$11.5K |
|
341
CALL
ExxonMobil
XOM
$640B
| $656K | 0.05% |
5,303
+1,610
| +44% | +$129K |
|
|
DATA
342
PUT
DELISTED
Tableau Software, Inc.
DATA
| $651K | 0.05% |
297
-9
| -3% | -$522 |
|
343
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
$372M
| $648K | 0.05% |
441
+283
| +179% | +$293K |
|
|
TWC
344
CALL
DELISTED
TIME WARNER CABLE INC NEW COM STK
TWC
| $648K | 0.05% |
527
+208
| +65% | +$39.3K |
|
345
Baxter International
BAX
$11.2B
| $646K | 0.05% |
15,731
+6,931
| +79% | +$264K |
|
346
CALL
ConocoPhillips
COP
$145B
| $646K | 0.05% |
3,870
+1,792
| +86% | +$68.1K |
|
|
X
347
PUT
DELISTED
US Steel
X
| $641K | 0.05% |
4,024
+1,624
| +68% | +$16.2K |
|
|
VMW
348
PUT
DELISTED
VMware, Inc
VMW
| $638K | 0.05% |
1,070
+492
| +85% | +$24.4K |
|
349
CALL
Visa
V
$672B
| $637K | 0.05% |
1,791
+162
| +10% | +$11.8K |
|
350
iShares S&P 500 Value ETF
IVE
$48.8B
| $635K | 0.05% |
7,069
+7,039
| +23,463% | +$601K |
|
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.