delta

Gamma measures how quickly an option’s delta changes as the underlying index moves, while net dealer gamma estimates how market makers’ exposure to the contracts they have sold, or bought, may influence their hedging activity.

From MarketWatch ● Aug. 5, 2026

For decades, so much water has been taken that the river seldom meets the sea in Mexico, and its delta, once filled with lush wetlands and forests, has shriveled to stretches of dry riverbed.

From Los Angeles Times ● Jul. 21, 2026

At the delta of the Rhine and Meuse in the Netherlands, on land largely reclaimed from the North Sea, it's the biggest port for freight, external in Europe.

From BBC ● Jul. 9, 2026

They found that bacteria with the greatest glyphosate resistance were often closely related, regardless of whether they originated from hospitals, farms, or the Paraná delta.

From Science Daily ● Jun. 23, 2026

“Down Cairo way? Yeah. It’s in the delta of the Ohio and the Mississippi. Like Cairo in Egypt, in the Nile delta.”

From "American Gods" by Neil Gaiman

The world-renowned site features iron carbonate concretions that formed some 309 million years ago, fossilizing within them ancient creatures that had once thrived in the area's lush swamps, shallow seas and river deltas.

From Barron's ● Jun. 18, 2026

Over time, sediment carried by rivers built deltas at the head of the Gulf, cutting off tidal access to inland areas.

From Science Daily ● Oct. 27, 2025

To assess the risk to China's deltas, the researchers combined geological records, measurements of land subsidence, and data on human impacts.

From Science Daily ● Oct. 23, 2025

That means they are also imperiling some of the world’s most important food-producing lowlands in the Nile and Mekong deltas and cities from Shanghai to New York.

From Salon ● Jul. 28, 2025

In his badly penned sigmas and deltas she spied the shaking hand of her son’s growing anxiety.

From "Middlesex: A Novel" by Jeffrey Eugenides