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 | |
|---|---|---|---|---|---|---|
|
INVN
651
DELISTED
Invensense Inc
INVN
| $383K | 0.03% |
62,593
+26,908
| +75% | +$186K |
|
652
iShares Russell 1000 Value ETF
IWD
$81.7B
| $382K | 0.03% |
+3,710
| New | +$375K |
|
653
Lam Research
LRCX
$399B
| $382K | 0.03% |
+45,510
| New | +$366K |
|
654
PUT
SLB Ltd
SLB
$71.3B
| $382K | 0.03% |
2,277
+732
| +47% | +$56.1K |
|
655
PUT
Energy Transfer Partners
ET
$70.1B
| $381K | 0.03% |
4,442
+1,792
| +68% | +$21.4K |
|
656
ProShares VIX Short-Term Futures ETF
VIXY
$204M
| $381K | 0.03% |
+26
| New | +$429K |
|
|
VA
657
CALL
DELISTED
Virgin America Inc.
VA
| $381K | 0.03% |
384
+96
| +33% | +$5.33K |
|
658
3D Systems Corp
DDD
$434M
| $380K | 0.03% |
27,804
+24,061
| +643% | +$348K |
|
|
KRA
659
DELISTED
Kraton Corporation
KRA
| $380K | 0.03% |
+13,613
| New | +$333K |
|
|
APC
660
PUT
DELISTED
Anadarko Petroleum
APC
| $380K | 0.03% |
2,145
+465
| +28% | +$23.6K |
|
|
SWN
661
PUT
DELISTED
Southwestern Energy Company
SWN
| $377K | 0.03% |
3,355
+3,047
| +989% | +$36.9K |
|
662
Ally Financial
ALLY
$13.7B
| $376K | 0.03% |
+22,055
| New | +$381K |
|
663
Progressive
PGR
$119B
| $376K | 0.03% |
+11,229
| New | +$371K |
|
|
WLL
664
PUT
DELISTED
Whiting Petroleum Corporation
WLL
| $376K | 0.03% |
7
+4
| +133% | +$13.2K |
|
|
HES
665
PUT
DELISTED
Hess
HES
| $375K | 0.03% |
3,313
-376
| -10% | -$21.8K |
|
666
PUT
Costco
COST
$411B
| $373K | 0.02% |
1,706
+166
| +11% | +$25.1K |
|
667
PUT
Seagate
STX
$205B
| $373K | 0.02% |
1,717
+1,054
| +159% | +$25.6K |
|
|
WBA
668
PUT
DELISTED
Walgreens Boots Alliance
WBA
| $373K | 0.02% |
2,857
+1,632
| +133% | +$132K |
|
|
CHK
669
PUT
DELISTED
Chesapeake Energy Corporation
CHK
| $373K | 0.02% |
7
-12
| -63% | -$11.5K |
|
670
W.W. Grainger
GWW
$63.9B
| $372K | 0.02% |
+1,638
| New | +$373K |
|
671
PUT
AT&T
T
$160B
| $372K | 0.02% |
9,524
-1,881
| -16% | -$56K |
|
672
Manhattan Associates
MANH
$8.82B
| $371K | 0.02% |
+5,797
| New | +$361K |
|
673
PUT
Occidental Petroleum
OXY
$57.2B
| $371K | 0.02% |
1,010
-539
| -35% | -$40.3K |
|
674
PUT
Capital One
COF
$124B
| $369K | 0.02% |
1,296
+47
| +4% | +$3.27K |
|
675
CALL
Vulcan Materials
VMC
$36B
| $369K | 0.02% |
282
-83
| -23% | -$9.4K |
|
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.