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Tamarack Capital Management, LLC

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13F filer, CIK 1537996, CARLSBAD, CA

Tamarack Capital Management, LLC reported $400,553,000 across 24 holdings for the quarter ended 2014-03-31, in a 13F-HR filed 2014-05-12. Its ten largest share positions make up 70.12% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001095449-14-000074

Period
2014-03-31
Reported value
$401M
Holdings
24
Top 10 weight
70.12%
New
2
Sold out
7

Largest buys vs the previous quarter

SecurityShares changeApprox. value
ENDOLOGIX INCnew+1,425,000$18.3M
CATAMARAN CORPadded+225,000$10.1M
INSYS THERAPEUTICS INCadded+242,141$10M
CAREFUSION CORPadded+240,000$9.65M
VOLCANO CORPORATIONadded+470,000$9.26M

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
VARIAN MED SYS INCexited-165,000-$12.8M
DXCMexited-310,000-$11M
ALKSreduced-215,000-$9.48M
WELLTOWER INCexited-165,000-$8.84M
AUXILIUM PHARMACEUTICALSreduced-325,000-$8.83M

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, Q1 2014

Share positions as resolved from 13F-HR 0001095449-14-000074, largest first. % of portfolio is the value over $294,642,000, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
VOLCANO CORPORATIONVOLCANO CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,645,000 shares 1,645,000$32.4M11%+470,000
CAREFUSION CORPCAREFUSION CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 700,000 shares 700,000$28.2M9.56%+240,000
AUXILIUM PHARMACEUTICALSAUXILIUM PHARMACEUTICALSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 925,000 shares 925,000$25.1M8.53%-325,000
ALKSALKERMES PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 475,000 shares 475,000$20.9M7.11%-215,000Timeline
INSYS THERAPEUTICS INCINSYS THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 477,141 shares 477,141$19.8M6.71%+242,141
ENDOLOGIX INCENDOLOGIX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,425,000 shares 1,425,000$18.3M6.22%new
GREATBATCH INCGREATBATCH INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 350,000 shares 350,000$16.1M5.45%-50,000
SPECTRANETICS CORPSPECTRANETICS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 525,000 shares 525,000$15.9M5.4%-245,300
NXSTAGE MEDICAL INCNXSTAGE MEDICAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,200,000 shares 1,200,000$15.3M5.19%+318,000
CATAMARAN CORPCATAMARAN CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 325,000 shares 325,000$14.5M4.94%+225,000
VOCERA COMMUNICATIONS INCVOCERA COMMUNICATIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 800,000 shares 800,000$13.1M4.43%+50,000
COVIDIEN PLCCOVIDIEN PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 175,000 shares 175,000$12.9M4.38%-15,000
BIOMED REALTY TRUST COMBIOMED REALTY TRUST COMQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 550,000 shares 550,000$11.3M3.82%+100,000
MDXGMIMEDX GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,800,000 shares 1,800,000$11M3.74%+600,000Timeline
CNMDCONMED CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 192,000 shares 192,000$8.34M2.83%+135,663Timeline
RTI BIOLOGICS INCRTI BIOLOGICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 2,000,000 shares 2,000,000$8.16M2.77%+273,518
ATRCATRICURE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 422,292 shares 422,292$7.94M2.7%-419,308Timeline
LUMINEX CORPLUMINEX CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 300,000 shares 300,000$5.43M1.84%+100,800
STREAMLINE HEALTH SOLUTIONSSTREAMLINE HEALTH SOLUTIONSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 875,000 shares 875,000$4.4M1.49%+80,617
OXFORD IMMUNOTEC GLOBAL PLCOXFORD IMMUNOTEC GLOBAL PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 167,625 shares 167,625$3.36M1.14%-107,375
DISCOVERY LABORATORIES INC NDISCOVERY LABORATORIES INC NQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2012Q2: restricted; 2012Q3: restricted; 2012Q4: restricted; 2013Q1: restricted; 2013Q2: restricted; 2013Q3: restricted; 2013Q4: restricted; 2014Q1: 1,000,000 shares 1,000,000$2.15M0.73%+753,945

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 SHSput350,000$65.5M-150,000
IWMISHARES TR SHSput200,000$23.3M-100,000
JNJJOHNSON & JOHNSON COMcall175,000$17.2Mnew

Sold out in Q1 2014

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

SecurityShares beforeValue beforeType
ALLERGAN INCALLERGAN INC125,000$13.9Mcall
VARIAN MED SYS INCVARIAN MED SYS INC165,000$12.8Mshares
DXCMDEXCOM INC310,000$11Mshares
WELLTOWER INCWELLTOWER INC165,000$8.84Mshares
PCRXPACIRA BIOSCIENCES INC75,000$4.31Mshares
BIOSCRIP INCBIOSCRIP INC500,000$3.7Mshares
OSURORASURE TECHNOLOGIES INC59,981$377Kshares

How Q1 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 0001095449-14-000074 base2014-05-12acceptance time not in the bulk data set