Dow Jones: tsos, muab xam, zoo, cov disadvantages

Nyob rau lub hauv paus ntawm kev ua lag luam tus nqi ntawm shares ntawm txawv analyses thiab kev ntsuam xyuas ntawm kev ua lag luam tej yam kev mob. Nyob rau hauv tus txheej txheem no, ib tug tseem ceeb txoj hauj lwm yog nyob rau ntawm Tshuag indexes. Yuav ua li cas yog ib tug ua lag luam Tshuag index? Qhov no muaj pes tsawg tus qhia lub puab thiab lub theem ntawm Tshuag nqi, cov mej zeej ntawm Tshuag pauv qhia rau ib tug tej lub sij hawm. Txhua Tshuag pauv nws Tshuag indexes: lub Performance index ntawm lub Dow Jones (DJI) nyob rau hauv New York, lub Nikkei (Nikkei) nyob rau hauv Japanese, Dax (DAX) nyob rau hauv lub teb chaws Yelemees, etc. Nyob rau hauv no tsab xov xwm peb yuav saib tus thawj heev ntawm lub qho indices - muaj index DJI.

tsos

Lub US Dow Jones index yog invented los ntawm Charles Dow nyob rau hauv lig Tej zaum 1896 mus taug kev hloov nyob rau hauv lub muaj feem ntawm cov kev lag luam Tshuag. Thawj nyob rau hauv lub Performance index xws li 12 tuam txhab uas muag. Tam sim no tus xov tooj tau mus txog 30. Cov tuam txhab uas muag nkag rau hauv tag nrho cov lag luam, tshwj tsis yog rau thauj, zog thiab dej. Tuam txhab uas muag koom nyob rau hauv cov kev xaiv ntawm Charlz Dou nws tus kheej, thiab ces nws pib ua loj tshuaj ntsuam thiab kho ntawm lub magazine "Phab ntsa Street Journal". Qhov Performance index muaj xws li cov tuam txhab xws li "Coca-Cola", "Microsoft", "Walt Disney", "Intel", "McDonald" thiab lwm tus neeg.

muab xam

Chiv, Dow Jones index twb xam los ntawm cov simplified system: nws yog tus zauv phem ntawm tus nqi ntawm shares muaj nyob rau hauv lub sum ntawm nws tuam txhab uas muag. Thaum lub caij, lub Performance index nqi yog suav tias yog txawv. Cov mis yog heev yooj yim: lub sum ntawm tus nqi ntawm cov khoom Tshuag yog muab faib los ntawm tus kho lus tshaj (Dow divisor). Qhov no divisor yog tus naj npawb ntawm tuam txhab uas muag nyob rau hauv lub Performance index. Tsaug rau cov mis no yog hloov dua siab tshiab rau lub xam phem. Tab sis tom qab ib tug thaum tej xwm txheej xws li ib tug kev hloov nyob rau hauv daim ntawv teev cov tuam txhab uas muag thiab tsob (division ntawm shares), ib tug tseem ceeb feem nyob rau Dow divisor. Tam sim no, nws cov nqi yog tsawg tshaj li 1, piv txwv li tus nqi ntawm DJI ntau dua qhov tawm ntawm cov muaj shares. Lub ntsiab lus ntawm cov divider hloov nteg nyob rau hauv lub fact tias tsis muaj tej yam tseem ceeb muaj tsis ntxim rau cov nqi, thiab nws tseem nyob zoo li qub. Rau no divider thiab kev hloov.

zoo

1. Ib qho yooj yim (nrog lub advent ntawm lub divider xam yog ib tug me ntsis ntau nyuaj) thiab yooj yim ntawm xam.

2. Qhov ntev keeb kwm. Dow - ib lub cim ntawm America Tshuag lag luam. Analysis ntawm nws puab rau xws li ib tug dav luv ntawm lub sij hawm qhib nyob rau hauv pem hauv ntej ntawm theorists thiab cov kws es lub sij hawm.

shortcomings

1. Dow Jones index qhia tau hais tias qhov nruab nrab nqi ntawm lub shares, tsis muab piv rau lawv mus rau lub hauv paus nqi. Yog li ntawd, nws yuav tsum raug xam tias yog nyob rau hauv kev sib raug zoo rau ib tug tej tus nqi, uas yuav pab raws li ib lub hauv paus rau kev sib piv thiab khi rau ib tug hnub.

2. Qhov loj tshaj drawback - nws yog tus qauv ntawm nws cov muab xam, nyob rau hauv uas lub ntxiv nqi ntawm lub shares muaj nyob rau hauv nws lub tuam txhab, thiab ces tag nrho cov zaum yog muab faib los ntawm tus kho lus tshaj (Dow divisor). Raws li ib tug tshwm sim, txawm yog hais tias tus tsiaj ntawv loj ntawm ib lub tuam txhab yog tsawg tshaj li lwm tus, tab sis, nrog rau tus nqi ntawm nws cov shares saum toj no, nws muaj nyob rau hauv lub Performance index ib tug ntau yam teeb meem loj.

3. Nrog rau ib tug tag nrho ntawm 30 tuam txhab uas muag, cov Dow Jones index zoo li tsis zoo heev nyob rau hauv lub luag hauj lwm ntawm lub Performance index, reflecting zuag qhia tag nrho kev ua si ntawm lub lag luam Tshuag. Tej zaum, rau ntau dua lub hom phiaj nrog DJI tshuaj ntsuam siv cov S & P 500.