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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CLVS
551
DELISTED
Clovis Oncology, Inc.
CLVS
| $382K | 0.03% |
19,909
+14,888
| +297% | +$315K |
|
|
POT
552
PUT
DELISTED
Potash Corp Of Saskatchewan
POT
| $379K | 0.03% |
631
-80
| -11% | -$1.35K |
|
|
WFM
553
PUT
DELISTED
Whole Foods Market Inc
WFM
| $379K | 0.03% |
685
-293
| -30% | -$9.17K |
|
|
INVX
554
Innovex International
INVX
$1.9B
| $378K | 0.03% |
6,244
-3,980
| -39% | -$222K |
|
555
CALL
NXP Semiconductors
NXPI
$70.4B
| $377K | 0.03% |
871
+114
| +15% | +$8.5K |
|
556
State Street Technology Select Sector SPDR ETF
XLK
$117B
| $376K | 0.03% |
+16,978
| New | +$351K |
|
557
Liberty Global Class A
LBTYA
$3.52B
| $375K | 0.03% |
11,192
+4,013
| +56% | +$126K |
|
|
ETP
558
PUT
DELISTED
Energy Transfer Partners L.p.
ETP
| $375K | 0.03% |
701
-379
| -35% | -$10.6K |
|
559
CALL
VanEck International High Yield Bond ETF
IHY
$43.1M
| $374K | 0.03% |
2,003
+1,042
| +108% | +$23.5K |
|
560
Rockwell Medical
RMTI
$25.4M
| $374K | 0.03% |
+454
| New | +$357K |
|
|
ALXN
561
CALL
DELISTED
Alexion Pharmaceuticals
ALXN
| $374K | 0.03% |
510
+190
| +59% | +$27.9K |
|
562
MiMedx Group
MDXG
$621M
| $373K | 0.03% |
42,683
+2,223
| +5% | +$18.5K |
|
563
T-Mobile US
TMUS
$207B
| $373K | 0.03% |
9,764
+7,059
| +261% | +$266K |
|
564
CALL
Kraft Heinz
KHC
$30.8B
| $372K | 0.03% |
1,037
-11
| -1% | -$823 |
|
|
ESV
565
PUT
DELISTED
Ensco Rowan plc
ESV
| $372K | 0.03% |
180
+51
| +40% | +$2.08K |
|
566
Norwegian Cruise Line
NCLH
$8.87B
| $371K | 0.03% |
+6,717
| New | +$324K |
|
567
PUT
RH
RH
$3.31B
| $371K | 0.03% |
1,022
+900
| +738% | +$46K |
|
568
Dycom Industries
DY
$13B
| $369K | 0.03% |
5,718
-5,422
| -49% | -$331K |
|
569
NetApp
NTAP
$32.6B
| $368K | 0.03% |
13,486
+4,871
| +57% | +$118K |
|
570
Puma Biotechnology
PBYI
$401M
| $368K | 0.03% |
12,558
+567
| +5% | +$25.6K |
|
571
AstraZeneca
AZN
$263B
| $367K | 0.03% |
+6,524
| New | +$392K |
|
572
PUT
APA Corp
APA
$12.8B
| $366K | 0.03% |
980
+40
| +4% | +$1.66K |
|
|
SHPG
573
PUT
DELISTED
Shire pic
SHPG
| $366K | 0.03% |
590
+535
| +973% | +$89.6K |
|
574
State Street SPDR S&P Insurance ETF
KIE
$605M
| $365K | 0.03% |
+15,837
| New | +$348K |
|
575
CALL
Royal Gold
RGLD
$17.1B
| $361K | 0.03% |
505
+152
| +43% | +$6.2K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.