All articles starting with P
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Porter's five forces analysis
Porter's five forces analysis, first published by Michael E. Porter in 1979, assesses an industry's competition and profitability through five forces, including rivalry and buyer power.
Porter's generic strategies
Porter's generic strategies are three ways for a business to gain competitive advantage, cost leadership, differentiation, and focus, set out by Michael Porter in Competitive Strategy in 1980.
Porter's Lodge
Porter's Lodge: name of gatehouse buildings at institution entrances, staffed by a porter. Notable examples include Portsmouth dockyard (1708), Winchester Close (Grade I, C15), and Trinity College, Cambridge (c. 1490).
Portes (game)
Portes (Πόρτες, "doors") is the first game of Greek tavli, the closest to international backgammon: standard setup and hitting, but no doubling cube, no triple win, and a re-rolled opening, scored 1 or 2 points within a three-game match.
Portes (site)
Portes (site): historic coal-mining complex of Portes and Sénéchas, Gard, France; concession created 1822, company 1854, inclined-plane railway 1859-1867, four shafts, output up to 300,000 t/year, mining ended 1956.
Portes du Soleil
Portes du Soleil, Franco-Swiss cross-border ski and mountain bike domain of 12 linked resorts between Lake Geneva and Mont Blanc; over 600 km of pistes, first cross-border lift 1956, named 1965 after the pass above Les Crosets.
Portfolio (finance)
A portfolio in finance is a collection of financial assets such as stocks, bonds, and real estate owned by one person or entity, defined by asset allocation.
Portfolio Advisors Private Equity
Portfolio Advisors Private Equity is the numbered series of private equity fund-of-funds vehicles managed by Portfolio Advisors, LLC, a Darien, Connecticut adviser founded in 1994.
Portfolio Advisors Real Estate
Portfolio Advisors Real Estate is the PAREF series of real estate fund-of-funds vehicles sponsored by Portfolio Advisors, LLC of Darien, Connecticut, investing in third-party real estate funds, secondaries, and co-investments.
Portfolio investment
Portfolio investment is cross-border investment in debt and equity securities outside direct investment and reserve assets, and is the most volatile component of capital flows.
Portfolio optimization
Portfolio optimization is a quantitative method that selects asset weights to maximize expected return for a given level of risk, formulated by Harry Markowitz in 1952.
Porthcurno Telegraph Station
Porthcurno Telegraph Station was a submarine cable landing station at Porthcurno, near Land's End in Cornwall, which from 1870 handled the British end of the telegraph chain to India.
Porthleven
Porthleven, Cornwall's most southerly port, is a town on Mount's Bay built around a refuge harbour authorized by the 1811 Act of Parliament, opened 16 August 1825, later run by Harvey & Co, with a pilchard fishing and boatbuilding past and a storm-famous clock tower.
Porthmadog
Porthmadog FC (CPD Porthmadog), Welsh football club founded 1872 in Porthmadog, Gwynedd, playing at Y Traeth (capacity 2,500); JD Cymru North member for 2026/27 after Ardal North play-off promotion.
Porthos
Porthos (M. du Vallon) is a fictional Musketeer in Dumas's The Three Musketeers (1844), with Athos and Aramis. Vain, loud, physically strong comic figure; marries Madame Coquenard; based on Isaac de Portau; appears across the D'Artagnan trilogy.
Portia (spider)
Portia (Karsch, 1878), a genus of web-building jumping spiders (Salticidae, Spartaeinae) with about 20 species from the Oriental and Ethiopian regions, known for araneophagy, aggressive mimicry by trial-and-error web signals, and experimentally documented planning, working memory, and problem solving.
Portia (The Merchant of Venice)
Portia is the wealthy heiress of Belmont in Shakespeare's The Merchant of Venice (1596–1598), won by Bassanio through the casket test, who as the disguised lawyer Balthazar defeats Shylock's bond and delivers the 'quality of mercy' speech in Act 4, Scene 1.
Portia de Rossi
Portia de Rossi (Portia Lee James DeGeneres), born Amanda Lee Rogers, 1973, Australian-American actress known for Nelle Porter on Ally McBeal and Lindsay Bluth-Funke on Arrested Development; married to Ellen DeGeneres since 2008.
Portia Doubleday
Portia Doubleday (born 1988) is an American actress known as Sheeni Saunders in Youth in Revolt (2009) and Angela Moss in Mr. Robot (2015–2019); also appeared in Carrie, Her, and The Social Reckoning.
Portia fimbriata
Portia fimbriata, the fringed jumping spider (Doleschall, 1859), is an araneophagic Salticidae spider from Queensland and Asia that builds webs, mimics prey vibrations, stalks other spiders, and plans detours.
Portia labiata
Portia labiata (Hairy Moustached Portia), a Salticidae jumping spider from India and Sri Lanka to the Philippines, is araneophagic, uses planned detours against spitting spiders, and is a model for spider cognition research.
Portia Woodman
Portia Woodman-Wickliffe, born 1991, New Zealand Black Ferns winger in sevens and XVs; four World Cups, Olympic golds Tokyo 2020 and Paris 2024; 50 test tries, New Zealand's record try-scorer; retired February 2026.
Portico
A portico, plural porticoes, is an open structure with a roof supported by columns, built as an entrance to a large house or public building.
Porticus Absidata
Porticus Absidata, the apsidal or horseshoe-shaped portico behind Rome's Forum Transitorium (Forum of Nerva), built under Domitian as the grand entrance from the Subura to the imperial fora; also called porticus curva.
Porticus Aemilia
Porticus Aemilia was a vast porticoed building of the Roman Republic near the Tiber in Rome, traditionally identified as a warehouse and begun in 193 BC.
Porticus Minucia
Porticus Minucia: Roman portico in the Campus Martius built by M. Minucius Rufus (consul 110 BC) after his Scordisci triumph; a second Minucia Frumentaria later hosted Rome's grain dole.
Porticus Octaviae
Porticus Octaviae (Portico of Octavia, Portico d'Ottavia): Augustan quadriporticus in Rome's Campus Martius, built 27-23 BC by Augustus for his sister Octavia, enclosing temples of Juno Regina and Jupiter Stator, a Greek-Latin library, and the Curia Octaviae; restored by Severus and Caracalla in AD 203.
Porticus Pompei
Porticus Pompei (Porticus Pompeianae, Portico of Pompey): quadriporticus garden built 55 BC by Pompey behind his Theatre in Rome's Campus Martius, about 180 x 135 m, with plane-tree groves, fountains, and the Curia Pompei where Caesar was murdered.
Portillo's Restaurants
Portillo's Restaurants: Chicago-area fast-casual chain founded in 1963 by Dick Portillo as 'The Dog House' in Villa Park, Illinois, with $1,100; now over 100 restaurants in 11 states, Nasdaq-listed as PTLO, known for Italian beef and Chicago-style hot dogs.
Portimonense S.C.
Portimonense SC, Portuguese football club of Portimão, Algarve, founded 14 August 1914; black-and-white striped kit, SAD-managed professional team, first top-division promotion 1975/76, UEFA Cup 1985/86, plays at Estádio Municipal de Portimão.