$('span').wrapAll('<div></div>');

    <p>        <div>            <span>Something_1</span>            <span>Something_2</span>        </div>        </p> 

    $('span').wrap('<div></div>');

    <p>        <div>            <span>Something_1</span>            <span>Something_2</span>        </div>        </p> 

    $('span').wrapInner('<div></div>');

    <p>        <span><div>Something_1</div></span>        <span><div>Something_2</div></span>    </p> 

    $('span').wrap('<div></div>');

    <p>        <div><span>Something_1</span></div>        <div><span>Something_2</span></div>    </p> 

    $('span').wrapAll('<div></div>');

    <div>        <p>            <span>Something_1</span>            <span>Something_2</span>            </p>    </div>