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Disclosery

Tamarack Capital Management, LLC

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13F filer, CIK 1537996, CARLSBAD, CA

Tamarack Capital Management, LLC reported $451,124,000 across 30 holdings for the quarter ended 2014-09-30, in a 13F-HR filed 2014-11-07. Its ten largest share positions make up 65.2% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001095449-14-000147

Period
2014-09-30
Reported value
$451M
Holdings
30
Top 10 weight
65.2%
New
10
Sold out
9

Largest buys vs the previous quarter

SecurityShares changeApprox. value
MEDTRONIC INCnew+370,000$22.9M
ENDOLOGIX INCadded+925,000$9.8M
BIOadded+67,009$7.6M
CUBIST PHARMACEUTICALS INCnew+110,000$7.3M
PATTERSON COS INCadded+145,000$6.01M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
COVIDIEN PLCexited-225,000-$20.5M
CAREFUSION CORPreduced-375,000-$17M
VOLCANO CORPORATIONreduced-1,518,300-$16.2M
CATAMARAN CORPexited-300,000-$13M
AEGERION PHARMACEUTICALS INCexited-400,000-$11.7M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q3 2014

Share positions as resolved from 13F-HR 0001095449-14-000147, largest first. % of portfolio is the value over $328,276,000, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
ENDOLOGIX INCENDOLOGIX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,425,000 shares; 2014Q2: 2,375,000 shares; 2014Q3: 3,300,000 shares 3,300,000$35M10.66%+925,000
SPECTRANETICS CORPSPECTRANETICS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 525,000 shares; 2014Q2: 1,150,000 shares; 2014Q3: 1,150,000 shares 1,150,000$30.6M9.31%0
MEDTRONIC INCMEDTRONIC INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: not reported; 2014Q3: 370,000 shares 370,000$22.9M6.98%new
CAREFUSION CORPCAREFUSION CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 700,000 shares; 2014Q2: 875,000 shares; 2014Q3: 500,000 shares 500,000$22.6M6.89%-375,000
GREATBATCH INCGREATBATCH INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 350,000 shares; 2014Q2: 369,900 shares; 2014Q3: 474,730 shares 474,730$20.2M6.16%+104,830
AUXILIUM PHARMACEUTICALSAUXILIUM PHARMACEUTICALSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 925,000 shares; 2014Q2: 943,526 shares; 2014Q3: 650,000 shares 650,000$19.4M5.91%-293,526
ALKSALKERMES PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 475,000 shares; 2014Q2: 525,000 shares; 2014Q3: 450,000 shares 450,000$19.3M5.88%-75,000Timeline
PATTERSON COS INCPATTERSON COS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 225,000 shares; 2014Q3: 370,000 shares 370,000$15.3M4.67%+145,000
NXSTAGE MEDICAL INCNXSTAGE MEDICAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,200,000 shares; 2014Q2: 1,050,000 shares; 2014Q3: 1,100,000 shares 1,100,000$14.4M4.4%+50,000
MDXGMIMEDX GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,800,000 shares; 2014Q2: 1,775,000 shares; 2014Q3: 2,000,000 shares 2,000,000$14.3M4.34%+225,000Timeline
TEVATEVA PHARMACEUTICAL INDS LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 246,500 shares; 2014Q3: 230,000 shares 230,000$12.4M3.77%-16,500Timeline
LUMINEX CORPLUMINEX CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 300,000 shares; 2014Q2: 500,000 shares; 2014Q3: 550,000 shares 550,000$10.7M3.27%+50,000
RTI BIOLOGICS INCRTI BIOLOGICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 2,000,000 shares; 2014Q2: 2,150,000 shares; 2014Q3: 2,200,000 shares 2,200,000$10.5M3.2%+50,000
ATRCATRICURE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 422,292 shares; 2014Q2: 586,555 shares; 2014Q3: 700,000 shares 700,000$10.3M3.14%+113,445Timeline
BIOBIO RAD LABS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 16,369 shares; 2014Q3: 83,378 shares 83,378$9.46M2.88%+67,009Timeline
NATUS MEDICAL INCNATUS MEDICAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 153,533 shares; 2014Q3: 274,695 shares 274,695$8.11M2.47%+121,162
CUBIST PHARMACEUTICALS INCCUBIST PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: not reported; 2014Q3: 110,000 shares 110,000$7.3M2.22%new
INGNINOGEN INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: not reported; 2014Q3: 260,617 shares 260,617$5.37M1.64%newTimeline
VOLCANO CORPORATIONVOLCANO CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,645,000 shares; 2014Q2: 2,018,300 shares; 2014Q3: 500,000 shares 500,000$5.32M1.62%-1,518,300
STREAMLINE HEALTH SOLUTIONSSTREAMLINE HEALTH SOLUTIONSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 875,000 shares; 2014Q2: 1,025,000 shares; 2014Q3: 1,138,000 shares 1,138,000$5.27M1.61%+113,000
ICUIICU MED INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: not reported; 2014Q3: 80,125 shares 80,125$5.14M1.57%newTimeline
IMPRIVATA INCIMPRIVATA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 195,553 shares; 2014Q3: 300,000 shares 300,000$4.66M1.42%+104,447
BDXBECTON DICKINSON & COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: not reported; 2014Q3: 40,000 shares 40,000$4.55M1.39%newTimeline
DXCMDEXCOM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: not reported; 2014Q3: 105,000 shares 105,000$4.2M1.28%newTimeline
HANGER INCHANGER INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: not reported; 2014Q3: 200,000 shares 200,000$4.1M1.25%new
CORIUM INTL INCCORIUM INTL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 627,670 shares; 2014Q3: 667,579 shares 667,579$4.1M1.25%+39,909
DISCOVERY LABORATORIES INC NDISCOVERY LABORATORIES INC NQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,000,000 shares; 2014Q2: 1,500,000 shares; 2014Q3: 1,500,000 shares 1,500,000$2.76M0.84%0

Options

Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).

SecurityTypeAmountValueChange
SPYSTATE STR SPDR S&P 500 ETF T SHSput500,000$98.5Mnew
PMPHILIP MORRIS INTL INC COMput150,000$12.5Mnew
PFEPFIZER INC COMcall400,000$11.8Mnew

Sold out in Q3 2014

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
IWMISHARES TR1,100,000$128Mput
COVIDIEN PLCCOVIDIEN PLC225,000$20.5Mshares
CATAMARAN CORPCATAMARAN CORP300,000$13Mshares
AEGERION PHARMACEUTICALS INCAEGERION PHARMACEUTICALS INC400,000$11.7Mshares
IRWDIRONWOOD PHARMACEUTICALS INC800,000$11.5Mshares
VOCERA COMMUNICATIONS INCVOCERA COMMUNICATIONS INC700,000$9.19Mshares
CNMDCONMED CORP50,000$2.18Mshares
AMAG PHARMACEUTICALS INCAMAG PHARMACEUTICALS INC64,080$1.22Mshares
CNMDCONMED CORP5,200$227Kcall

How Q3 2014 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001095449-14-000147 base2014-11-07acceptance time not in the bulk data set