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 | |
|---|---|---|---|---|---|---|
|
RLYP
701
DELISTED
RELYPSA INC COM
RLYP
| $344K | 0.02% |
18,613
+2,966
| +19% | +$52.1K |
|
702
CALL
Pan American Silver
PAAS
$19.1B
| $343K | 0.02% |
563
+99
| +21% | +$1.42K |
|
703
PUT
Wheaton Precious Metals
WPM
$50.6B
| $343K | 0.02% |
2,050
+384
| +23% | +$7.41K |
|
|
WNR
704
PUT
DELISTED
Western Refining Inc
WNR
| $343K | 0.02% |
697
+440
| +171% | +$10.3K |
|
705
CALL
Lam Research
LRCX
$399B
| $340K | 0.02% |
2,980
-690
| -19% | -$5.54K |
|
706
CALL
McKesson
MCK
$95.3B
| $339K | 0.02% |
356
+181
| +103% | +$31.8K |
|
|
INXN
707
DELISTED
Interxion Holding N.V.
INXN
| $339K | 0.02% |
9,216
+5,220
| +131% | +$185K |
|
|
DYN
708
DELISTED
Dynegy, Inc.
DYN
| $339K | 0.02% |
+19,670
| New | +$342K |
|
709
CALL
Kinder Morgan
KMI
$72.3B
| $338K | 0.02% |
3,418
-646
| -16% | -$11.5K |
|
|
WFM
710
PUT
DELISTED
Whole Foods Market Inc
WFM
| $338K | 0.02% |
1,099
+414
| +60% | +$12.9K |
|
|
SIVB
711
DELISTED
SVB Financial Group
SIVB
| $338K | 0.02% |
+3,561
| New | +$364K |
|
712
Avery Dennison
AVY
$12.1B
| $337K | 0.02% |
+4,514
| New | +$335K |
|
713
PUT
BP
BP
$112B
| $337K | 0.02% |
5,628
+2,455
| +77% | +$66.1K |
|
|
PPLI
714
People Inc
PPLI
$3.23B
| $337K | 0.02% |
33,567
-1,113
| -3% | -$10.3K |
|
715
Vertex Pharmaceuticals
VRTX
$120B
| $337K | 0.02% |
3,919
+1,969
| +101% | +$170K |
|
|
DNO
716
DELISTED
United States Short Oil Fund
DNO
| $336K | 0.02% |
4,978
+3,456
| +227% | +$252K |
|
717
Gogo Inc
GOGO
$502M
| $335K | 0.02% |
39,933
+35,668
| +836% | +$355K |
|
718
Under Armour Class C
UA
$3.02B
| $335K | 0.02% |
+9,225
| New | +$340K |
|
719
CALL
DuPont de Nemours
DD
$18.9B
| $334K | 0.02% |
1,260
-264
| -17% | -$34.7K |
|
720
CALL
Ulta Beauty
ULTA
$20.8B
| $334K | 0.02% |
125
+72
| +136% | +$15.7K |
|
721
PUT
Ionis Pharmaceuticals
IONS
$8.93B
| $333K | 0.02% |
426
+125
| +42% | +$4.03K |
|
722
CALL
Children's Place
PLCE
$60.3M
| $333K | 0.02% |
323
+100
| +45% | +$7.53K |
|
|
BREW
723
DELISTED
Craft Brew Alliance, Inc.
BREW
| $333K | 0.02% |
+28,908
| New | +$256K |
|
724
PUT
AbbVie
ABBV
$448B
| $332K | 0.02% |
2,061
+608
| +42% | +$37K |
|
725
CALL
Mondelez International
MDLZ
$78.1B
| $332K | 0.02% |
1,768
+816
| +86% | +$35.6K |
|
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.