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 | |
|---|---|---|---|---|---|---|
|
AMTD
401
DELISTED
TD Ameritrade Holding Corp
AMTD
| $688K | 0.05% |
+24,189
| New | +$736K |
|
402
American Water Works
AWK
$26.1B
| $686K | 0.05% |
+8,127
| New | +$604K |
|
403
CALL
Occidental Petroleum
OXY
$57.2B
| $683K | 0.05% |
1,640
-148
| -8% | -$11.1K |
|
|
SCTY
404
CALL
DELISTED
SolarCity Corporation
SCTY
| $681K | 0.05% |
6,024
+1,759
| +41% | +$43.3K |
|
|
405
CALL
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27B
| $679K | 0.05% |
929
+130
| +16% | +$34.7K |
|
|
UN
406
DELISTED
Unilever NV New York Registry Shares
UN
| $678K | 0.05% |
14,456
+9,586
| +197% | +$430K |
|
407
Intuit
INTU
$77.8B
| $676K | 0.05% |
6,062
+5,709
| +1,617% | +$597K |
|
408
Direxion Daily 20+ Year Treasury Bear 3X ETF
TMV
$179M
| $676K | 0.05% |
16,151
+11,906
| +280% | +$597K |
|
409
Silicon Motion
SIMO
$9.55B
| $675K | 0.05% |
14,136
+11,561
| +449% | +$485K |
|
410
PUT
Palo Alto Networks
PANW
$273B
| $674K | 0.05% |
4,092
-1,338
| -25% | -$31K |
|
411
CALL
UnitedHealth
UNH
$392B
| $671K | 0.04% |
1,246
-143
| -10% | -$19.1K |
|
412
CALL
Wells Fargo
WFC
$262B
| $669K | 0.04% |
5,721
+1,824
| +47% | +$88.9K |
|
413
PUT
iShares MSCI Australia ETF
EWA
$1.35B
| $667K | 0.04% |
10,069
+3,996
| +66% | +$78K |
|
|
APOL
414
DELISTED
Apollo Education Group Inc Class A
APOL
| $667K | 0.04% |
73,158
+43,986
| +151% | +$379K |
|
|
MNDT
415
PUT
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $666K | 0.04% |
433
-668
| -61% | -$10.8K |
|
416
PUT
United Airlines
UAL
$38.1B
| $663K | 0.04% |
1,435
-898
| -38% | -$42.5K |
|
417
BHP
BHP
$215B
| $662K | 0.04% |
+25,994
| New | +$648K |
|
418
PUT
FedEx
FDX
$76.6B
| $659K | 0.04% |
1,678
+785
| +88% | +$127K |
|
419
Toronto Dominion Bank
TD
$200B
| $659K | 0.04% |
15,365
-11,735
| -43% | -$511K |
|
420
Carter's
CRI
$1.41B
| $657K | 0.04% |
+6,175
| New | +$637K |
|
421
CALL
RTX Corp
RTX
$262B
| $656K | 0.04% |
2,239
+731
| +48% | +$46.8K |
|
422
PUT
Starbucks
SBUX
$119B
| $656K | 0.04% |
3,794
+2,166
| +133% | +$123K |
|
423
Sarepta Therapeutics
SRPT
$1.67B
| $654K | 0.04% |
34,308
+4,259
| +14% | +$78.9K |
|
|
CRZO
424
DELISTED
Carrizo Oil & Gas Inc
CRZO
| $654K | 0.04% |
18,258
+7,591
| +71% | +$271K |
|
425
PUT
Williams Companies
WMB
$91.1B
| $652K | 0.04% |
693
-689
| -50% | -$13.8K |
|
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.