Spider

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Related to Web spider: Web crawler

Spider

See: SPDRs

Spider

Also called a Standard & Poor's Depositary Receipt or a SPDR. An exchange-traded fund that tracks the Standard and Poor's 500. The organization issuing the SPDR owns each of the stocks traded on the S&P 500 in approximate ratio to their market capitalization. SPDR shares can be bought, sold, short-sold, traded on margin; they generally function as if they were stocks. Dividends are paid quarterly and are based on the accumulated dividends of all the stocks represented in the SPDR, less any expenses. Investors use SPDRs (and indeed all exchange-traded funds) as a way to easily diversify their portfolios at relatively low cost. Investors also see the demand for SPDRs as an indicator of which direction the market believes the S&P 500 is going. See also: Mid-Cap SPDR.

spider

References in periodicals archive ?
A different lab's experiment with nursery web spiders had failed to find a defensive benefit because so few courtships in this species end in death.
We propose a honeypot implementation for IDS in a WSN, which is bioinspired in the behavior of the web spider. We have only found one paper that uses a web spider-inspired mechanism [32].
While no respondent treated a funnel web spider bite (n=21) and 81.8% (n=18) respondents had never treated a redback spider bite, white tail spider bites were treated weekly or monthly by 22.7% respondents (n=5).
Answers: 1 -- E trap-door spider, 2 -- D funnel web spider, 3 -- B hammock spider, 4 -- A orb weaver spider, 5 -- C purse web spider.
Studies on populations of the tunnel web spider Porrhothele antipodiana (Mygalomorphae: Dipluridae).
Additionally, sailors would position bags of soft organic material around the edges of boats to minimise the impact of collisions when coming into port and the tube web spiders could well have arrived in Bristol within these bags centuries ago.
New research led by Newcastle University has tested the bio-pesticide - a combination of a natural toxin from the venom of an Australian funnel web spider and snowdrop protein.
Although, I have been putting them over my shoes just in case a funnel web spider tries to take up residence.
Environmental Health officers later identified the creepy crawly as a Tube Web spider, which originates in southern Europe and has a vicious bite.
This is a large female nursery web spider, Pisaura mira.