"sell against the box" meaning in English

{
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        "2": "verb"
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      "expansion": "sell against the box",
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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
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          "langcode": "en",
          "name": "Finance",
          "orig": "en:Finance",
          "parents": [
            "Business",
            "Economics",
            "Society",
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            "Fundamental"
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          "source": "w"
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      "examples": [
        {
          "ref": "1932, United States. Congress. Senate. Committee on Banking and Currency, Stock Exchange Practices: Hearings Before the Committee, page 332",
          "text": "Mr. ROCKEFELLER. The large holdings I think I sold back in 1925 or 1926.\nMr. Gray. Did you sell against the box then?",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To sell stock that one owns, but deliver stock acquired elsewhere, so that one is effectively selling short and protecting oneself from a fall in the stock."
      ],
      "id": "en-sell_against_the_box-en-verb-zcvtSEik",
      "links": [
        [
          "finance",
          "finance#Noun"
        ],
        [
          "sell",
          "sell"
        ],
        [
          "stock",
          "stock"
        ],
        [
          "deliver",
          "deliver"
        ],
        [
          "selling short",
          "sell short"
        ],
        [
          "fall",
          "fall"
        ]
      ],
      "raw_glosses": [
        "(finance) To sell stock that one owns, but deliver stock acquired elsewhere, so that one is effectively selling short and protecting oneself from a fall in the stock."
      ],
      "topics": [
        "business",
        "finance"
      ]
    }
  ],
  "word": "sell against the box"
}

{
  "head_templates": [
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        "1": "en",
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      "expansion": "sell against the box",
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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
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        "English entries with incorrect language header",
        "English lemmas",
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      "examples": [
        {
          "ref": "1932, United States. Congress. Senate. Committee on Banking and Currency, Stock Exchange Practices: Hearings Before the Committee, page 332",
          "text": "Mr. ROCKEFELLER. The large holdings I think I sold back in 1925 or 1926.\nMr. Gray. Did you sell against the box then?",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To sell stock that one owns, but deliver stock acquired elsewhere, so that one is effectively selling short and protecting oneself from a fall in the stock."
      ],
      "links": [
        [
          "finance",
          "finance#Noun"
        ],
        [
          "sell",
          "sell"
        ],
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          "stock",
          "stock"
        ],
        [
          "deliver",
          "deliver"
        ],
        [
          "selling short",
          "sell short"
        ],
        [
          "fall",
          "fall"
        ]
      ],
      "raw_glosses": [
        "(finance) To sell stock that one owns, but deliver stock acquired elsewhere, so that one is effectively selling short and protecting oneself from a fall in the stock."
      ],
      "topics": [
        "business",
        "finance"
      ]
    }
  ],
  "word": "sell against the box"
}