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 |
LNKD
LinkedIn Corporation
LNKD
|
+$21.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.3M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$15M |
| 4 |
Biogen
BIIB
|
+$14.9M |
| 5 |
Visa
V
|
+$14.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$36.7M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$14.7M |
| 5 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$13.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 6.61% |
| 2 | Healthcare | 6.55% |
| 3 | Technology | 6.45% |
| 4 | Consumer Discretionary | 4.54% |
| 5 | Financials | 4.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1501
Aramark
ARMK
$15B
| $96K | 0.01% |
+4,005
| New | +$96.4K |
|
1502
Astec Industries
ASTE
$1.29B
| $96K | 0.01% |
+1,714
| New | +$87K |
|
1503
CALL
3D Systems Corp
DDD
$421M
| $96K | 0.01% |
769
-100
| -12% | -$1.45K |
|
1504
Global Payments
GPN
$22.1B
| $96K | 0.01% |
1,355
-2,781
| -67% | -$205K |
|
|
P
1505
PUT
Everpure Inc
P
$24.7B
| $96K | 0.01% |
563
+323
| +135% | +$4.21K |
|
1506
PUT
iShares Silver Trust
SLV
$28.1B
| $96K | 0.01% |
1,764
+535
| +44% | +$8.56K |
|
|
CERN
1507
CALL
DELISTED
Cerner Corp
CERN
| $96K | 0.01% |
252
+159
| +171% | +$8.86K |
|
|
FLTX
1508
DELISTED
Fleetmatics Group PLC
FLTX
| $96K | 0.01% |
+2,219
| New | +$88.4K |
|
|
IHS
1509
PUT
DELISTED
IHS INC CL-A COM STK
IHS
| $96K | 0.01% |
96
+68
| +243% | +$8.16K |
|
|
CY
1510
CALL
DELISTED
Cypress Semiconductor
CY
| $96K | 0.01% |
848
+358
| +73% | +$3.41K |
|
1511
PUT
Alnylam Pharmaceuticals
ALNY
$36.1B
| $95K | 0.01% |
214
-13
| -6% | -$819 |
|
1512
PUT
lululemon athletica
LULU
$13B
| $95K | 0.01% |
1,175
-740
| -39% | -$49.1K |
|
1513
PUT
3M
MMM
$88.7B
| $95K | 0.01% |
3,171
-650
| -17% | -$91.7K |
|
1514
Paycom
PAYC
$6.8B
| $95K | 0.01% |
2,214
+1,034
| +88% | +$40.4K |
|
1515
CALL
Truist Financial
TFC
$63.2B
| $95K | 0.01% |
1,816
+463
| +34% | +$16.2K |
|
|
CSOD
1516
PUT
DELISTED
Cornerstone OnDemand, Inc.
CSOD
| $95K | 0.01% |
125
+114
| +1,036% | +$4.24K |
|
|
SEMG
1517
DELISTED
SEMGROUP CORPORATION
SEMG
| $95K | 0.01% |
+2,947
| New | +$85.6K |
|
1518
CALL
ANI Pharmaceuticals
ANIP
$1.78B
| $94K | 0.01% |
+241
| New | +$11.7K |
|
1519
Apogee Enterprises
APOG
$850M
| $94K | 0.01% |
2,037
+1,369
| +205% | +$59.5K |
|
1520
PUT
Best Buy
BBY
$18B
| $94K | 0.01% |
313
+124
| +66% | +$3.9K |
|
1521
CALL
Colgate-Palmolive
CL
$72.5B
| $94K | 0.01% |
491
-20
| -4% | -$1.42K |
|
1522
PUT
Canadian Natural Resources
CNQ
$97.3B
| $94K | 0.01% |
1,276
-1,359
| -52% | -$19.2K |
|
1523
HDFC Bank
HDB
$120B
| $94K | 0.01% |
+5,668
| New | +$90.3K |
|
1524
PUT
Ferrari
RACE
$63.4B
| $94K | 0.01% |
443
-312
| -41% | -$13.2K |
|
1525
CALL
ALPS REIT Dividend Dogs ETF
RDOG
$11.6M
| $94K | 0.01% |
795
-54
| -6% | -$2.37K |
|
Similar funds
Simplex Trading's Q2 2016 Portfolio in Review
As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.
By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.
On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.
- Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
- Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
- Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
- Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
- Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
- Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.
Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.