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 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$49.8M |
| 2 |
Apple
AAPL
|
+$24.5M |
| 3 |
Citigroup
C
|
+$23.5M |
| 4 |
Amazon
AMZN
|
+$22.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$17.4M |
| 2 |
Wells Fargo
WFC
|
+$13.5M |
| 3 |
MDVN
MEDIVATION, INC.
MDVN
|
+$8.62M |
| 4 |
Goldman Sachs
GS
|
+$8.5M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$8.15M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.76% |
| 2 | Technology | 7.19% |
| 3 | Healthcare | 6.91% |
| 4 | Consumer Discretionary | 6.53% |
| 5 | Financials | 5.37% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
BBG
601
DELISTED
Bill Barrett Corp
BBG
| $451K | 0.03% |
64,562
+21,892
| +51% | +$140K |
|
602
iShares Russell Mid-Cap Value ETF
IWS
$15.6B
| $447K | 0.03% |
+5,570
| New | +$434K |
|
|
FINL
603
DELISTED
Finish Line
FINL
| $447K | 0.03% |
23,790
-17,681
| -43% | -$385K |
|
|
HRG
604
DELISTED
HRG Group, Inc.
HRG
| $447K | 0.03% |
+28,780
| New | +$440K |
|
|
IMPV
605
DELISTED
Imperva, Inc.
IMPV
| $446K | 0.03% |
11,623
-5,395
| -32% | -$219K |
|
|
PNK
606
DELISTED
Pinnacle Entertainment Inc.
PNK
| $445K | 0.03% |
30,720
+26,291
| +594% | +$351K |
|
607
Immersion
IMMR
$217M
| $444K | 0.03% |
+41,824
| New | +$395K |
|
608
PUT
ExxonMobil
XOM
$640B
| $444K | 0.03% |
4,805
+456
| +10% | +$39.8K |
|
609
Ecolab
ECL
$75.1B
| $443K | 0.03% |
+3,783
| New | +$443K |
|
|
HES
610
CALL
DELISTED
Hess
HES
| $443K | 0.03% |
1,244
-1,483
| -54% | -$81.1K |
|
|
RAD
611
PUT
DELISTED
Rite Aid Corporation
RAD
| $440K | 0.03% |
486
+320
| +193% | +$48.4K |
|
|
EEP
612
DELISTED
Enbridge Energy Partners
EEP
| $439K | 0.03% |
+17,252
| New | +$420K |
|
613
Ventas
VTR
$47.2B
| $437K | 0.03% |
+6,997
| New | +$443K |
|
614
PUT
Oracle
ORCL
$362B
| $436K | 0.03% |
3,243
+2,069
| +176% | +$80.9K |
|
615
United States Natural Gas Fund
UNG
$472M
| $435K | 0.03% |
2,916
-384
| -12% | -$52.2K |
|
616
PUT
Nordic American Tanker
NAT
$1.35B
| $434K | 0.03% |
1,407
+1,027
| +270% | +$9.13K |
|
|
LN
617
PUT
DELISTED
LINE Corporation
LN
| $434K | 0.03% |
+212
| New | +$8.42K |
|
|
SFLY
618
DELISTED
Shutterfly, Inc.
SFLY
| $434K | 0.03% |
+8,664
| New | +$420K |
|
619
CALL
CF Industries
CF
$19.6B
| $432K | 0.03% |
1,840
+792
| +76% | +$21.3K |
|
|
TOUR
620
Tuniu
TOUR
$57.6M
| $432K | 0.03% |
4,937
+649
| +15% | +$59.1K |
|
|
CONE
621
DELISTED
CyrusOne Inc Common Stock
CONE
| $432K | 0.03% |
9,669
+8,449
| +693% | +$374K |
|
622
UBS Group
UBS
$173B
| $431K | 0.03% |
27,530
+13,072
| +90% | +$197K |
|
|
CRZO
623
DELISTED
Carrizo Oil & Gas Inc
CRZO
| $431K | 0.03% |
+11,554
| New | +$446K |
|
|
JCP
624
DELISTED
J.C. Penney Company, Inc.
JCP
| $430K | 0.03% |
+51,786
| New | +$468K |
|
|
CIE
625
PUT
DELISTED
Cobalt International Energy, Inc
CIE
| $428K | 0.03% |
46
+4
| +10% | +$69 |
|
Similar funds
Simplex Trading's Q4 2016 Portfolio in Review
As of Q4 2016, Simplex Trading held 7,301 positions worth $1.67B, up 13% from $1.48B the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $181M of net new capital in Q4 2016, opening 1,543 new positions and adding to 2,137 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
By sector, the portfolio is most concentrated in Communication Services at 8.8% of assets, up from 8.4% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Goldman Sachs, an estimated $8.5M trimmed.
- Simplex Trading's largest Q4 2016 buy was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
- Simplex Trading added most to Apple in Q4 2016, an estimated $24.5M increase.
- Simplex Trading's biggest Q4 2016 reduction was Goldman Sachs, cutting an estimated $8.5M.
- Simplex Trading fully exited LinkedIn Corporation in Q4 2016, selling an estimated $17.4M.
- Simplex Trading's ten largest holdings make up 20% of its $1.67B portfolio in Q4 2016.
- Simplex Trading opened 1,543 new positions and closed 1,480 in Q4 2016.
- Simplex Trading's portfolio value rose 13% quarter-over-quarter to $1.67B.
Based on Simplex Trading's 13F filing for Q4 2016, filed 11 Jan 2017.