康寧公司
US ˙ NYSE ˙ US2193501051

SecurityGLW / Corning Incorporated
InstitutionCommonwealth Equity Services, Inc
Latest Disclosed Ownership546,880 shares
Latest Disclosed Value $ 16,363,000
Commonwealth Equity Services, Inc reports 2.91% increase in ownership of GLW / Corning Incorporated

On February 16, 2018 - Commonwealth Equity Services, Inc filed a 13F-HR/A form disclosing ownership of 546,880 shares of Corning Incorporated (US:GLW) valued at $16,362,650 USD as of September 30, 2017. The entity filed a previous 13F-HR/A on February 16, 2018 disclosing 531,399 shares of Corning Incorporated. This represents a change in shares of 2.91% during the quarter. The current value of the position is $97,114,950 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2018-02-16 2017-09-30 13F/A-1 CORNING COM 219350105 546,880 15,481 2.91 16,363 2.47 0.0979
2017-11-07 2017-09-30 13F CORNING COM 219350105 546,880 15,481 16,362
2018-02-16 2017-06-30 13F/A-1 CORNING COM 219350105 531,399 16,707 3.25 15,969 14.91 0.1015
2017-08-11 2017-06-30 13F CORNING COM 219350105 531,399 16,707 15,968
2018-02-16 2017-03-31 13F/A-1 CORNING COM 219350105 514,692 18,289 3.68 13,897 15.35 0.0930
2017-05-15 2017-03-31 13F CORNING COM 219350105 514,692 18,289 13,897
2018-02-16 2016-12-31 13F/A-1 CORNING COM 219350105 496,403 -21,825 -4.21 12,048 -1.70 0.0890
2017-02-01 2016-12-31 13F CORNING COM 219350105 496,403 -21,825 12,048
2016-10-25 2016-09-30 13F CORNING COM 219350105 518,228 -64,874 -11.13 12,256 2.63 0.0972
2016-08-04 2016-06-30 13F CORNING COM 219350105 583,102 6,892 1.20 11,942 -0.79 0.1007
2016-04-27 2016-03-31 13F CORNING COM 219350105 576,210 -10,799 -1.84 12,037 12.17 0.1073
2016-01-19 2015-12-31 13F CORNING COM 219350105 587,009 3,732 0.64 10,731 7.46 0.1016
2015-10-27 2015-09-30 13F CORNING COM 219350105 583,277 26,507 4.76 9,986 -9.09 0.1051
2015-07-28 2015-06-30 13F CORNING COM 219350105 556,770 68,012 13.92 10,985 -0.90 0.1092
2015-04-28 2015-03-31 13F CORNING COM 219350105 488,758 844 0.17 11,085 -0.92 0.1151
2015-01-13 2014-12-31 13F CORNING COM 219350105 487,914 -29,339 -5.67 11,188 11.84 0.1254
2014-10-17 2014-09-30 13F CORNING COM 219350105 517,253 29,533 6.06 10,004 -6.55 0.1216
2014-07-23 2014-06-30 13F CORNING COM 219350105 487,720 -25,917 -5.05 10,705 0.10 0.1303
2014-05-07 2014-03-31 13F CORNING COM 219350105 513,637 -29,036 -5.35 10,694 10.59 0.1477
2014-02-11 2013-12-31 13F CORNING COM 219350105 542,673 -60,739 -10.07 9,670 9.84 0.1404
2013-11-04 2013-09-30 13F CORNING COM 219350105 603,412 22,484 3.87 8,804 6.50 0.1430
2013-07-29 2013-06-30 13F CORNING COM 219350105 580,928 580,928 8,267 0.1458
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.