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Disclosery

Tamarack Capital Management, LLC

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13F filer, CIK 1537996, CARLSBAD, CA

Tamarack Capital Management, LLC reported $489,890,000 across 29 holdings for the quarter ended 2014-06-30, in a 13F-HR filed 2014-08-15. Its ten largest share positions make up 67.06% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001095449-14-000111

Period
2014-06-30
Reported value
$490M
Holdings
29
Top 10 weight
67.06%
New
10
Sold out
5

Largest buys vs the previous quarter

SecurityShares changeApprox. value
SPECTRANETICS CORPadded+625,000$14.3M
ENDOLOGIX INCadded+950,000$13.4M
TEVAnew+246,500$13.3M
AEGERION PHARMACEUTICALS INCnew+400,000$11.7M
IRWDnew+800,000$11.5M

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
INSYS THERAPEUTICS INCexited-477,141-$19.8M
BIOMED REALTY TRUST COMexited-550,000-$11.3M
CNMDreduced-142,000-$6.19M
OXFORD IMMUNOTEC GLOBAL PLCexited-167,625-$3.36M
NXSTAGE MEDICAL INCreduced-150,000-$2.03M

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, Q2 2014

Share positions as resolved from 13F-HR 0001095449-14-000111, largest first. % of portfolio is the value over $361,528,000, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
CAREFUSION CORPCAREFUSION CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 700,000 shares; 2014Q2: 875,000 shares 875,000$39.1M10.82%+175,000
VOLCANO CORPORATIONVOLCANO CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,645,000 shares; 2014Q2: 2,018,300 shares 2,018,300$33.6M9.3%+373,300
ENDOLOGIX INCENDOLOGIX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,425,000 shares; 2014Q2: 2,375,000 shares 2,375,000$33.6M9.29%+950,000
SPECTRANETICS CORPSPECTRANETICS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 525,000 shares; 2014Q2: 1,150,000 shares 1,150,000$26.2M7.26%+625,000
ALKSALKERMES PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 475,000 shares; 2014Q2: 525,000 shares 525,000$25.6M7.07%+50,000Timeline
COVIDIEN PLCCOVIDIEN PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 175,000 shares; 2014Q2: 225,000 shares 225,000$20.5M5.66%+50,000
AUXILIUM PHARMACEUTICALSAUXILIUM PHARMACEUTICALSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 925,000 shares; 2014Q2: 943,526 shares 943,526$18.4M5.08%+18,526
GREATBATCH INCGREATBATCH INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 350,000 shares; 2014Q2: 369,900 shares 369,900$18M4.97%+19,900
NXSTAGE MEDICAL INCNXSTAGE MEDICAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,200,000 shares; 2014Q2: 1,050,000 shares 1,050,000$14.2M3.93%-150,000
TEVATEVA PHARMACEUTICAL INDS LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 246,500 shares 246,500$13.3M3.67%newTimeline
CATAMARAN CORPCATAMARAN CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 325,000 shares; 2014Q2: 300,000 shares 300,000$13M3.6%-25,000
MDXGMIMEDX GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,800,000 shares; 2014Q2: 1,775,000 shares 1,775,000$12.1M3.35%-25,000Timeline
AEGERION PHARMACEUTICALS INCAEGERION PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 400,000 shares 400,000$11.7M3.22%new
IRWDIRONWOOD PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 800,000 shares 800,000$11.5M3.18%newTimeline
ATRCATRICURE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 422,292 shares; 2014Q2: 586,555 shares 586,555$9.83M2.72%+164,263Timeline
RTI BIOLOGICS INCRTI BIOLOGICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 2,000,000 shares; 2014Q2: 2,150,000 shares 2,150,000$9.35M2.59%+150,000
VOCERA COMMUNICATIONS INCVOCERA COMMUNICATIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 800,000 shares; 2014Q2: 700,000 shares 700,000$9.19M2.54%-100,000
PATTERSON COS INCPATTERSON COS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 225,000 shares 225,000$8.86M2.45%new
LUMINEX CORPLUMINEX CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 300,000 shares; 2014Q2: 500,000 shares 500,000$8.29M2.29%+200,000
STREAMLINE HEALTH SOLUTIONSSTREAMLINE HEALTH SOLUTIONSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 875,000 shares; 2014Q2: 1,025,000 shares 1,025,000$5.19M1.43%+150,000
CORIUM INTL INCCORIUM INTL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 627,670 shares 627,670$4.94M1.37%new
NATUS MEDICAL INCNATUS MEDICAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 153,533 shares 153,533$3.8M1.05%new
IMPRIVATA INCIMPRIVATA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 195,553 shares 195,553$3.24M0.9%new
DISCOVERY LABORATORIES INC NDISCOVERY LABORATORIES INC NQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,000,000 shares; 2014Q2: 1,500,000 shares 1,500,000$2.77M0.77%+500,000
CNMDCONMED CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 192,000 shares; 2014Q2: 50,000 shares 50,000$2.18M0.6%-142,000Timeline
BIOBIO RAD LABS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 16,369 shares 16,369$1.93M0.53%newTimeline
AMAG PHARMACEUTICALS INCAMAG PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: not reported; 2014Q2: 64,080 shares 64,080$1.22M0.34%new

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
IWMISHARES TR SHSput1,100,000$128M+900,000
CNMDCONMED CORP Stockcall5,200$227Knew

Sold out in Q2 2014

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

SecurityShares beforeValue beforeType
SPYSTATE STR SPDR S&P 500 ETF T350,000$65.5Mput
INSYS THERAPEUTICS INCINSYS THERAPEUTICS INC477,141$19.8Mshares
JNJJOHNSON & JOHNSON175,000$17.2Mcall
BIOMED REALTY TRUST COMBIOMED REALTY TRUST COM550,000$11.3Mshares
OXFORD IMMUNOTEC GLOBAL PLCOXFORD IMMUNOTEC GLOBAL PLC167,625$3.36Mshares

How Q2 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 0001095449-14-000111 base2014-08-15acceptance time not in the bulk data set