Sealed Air Corporation
US ˙ NYSE ˙ US81211K1007
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecuritySEE / Sealed Air Corporation
InstitutionCitigroup Inc
Latest Disclosed Ownership2,645,991 shares
Latest Disclosed Value $ 111,263,922
Citigroup Inc ownership in SEE / Sealed Air Corporation

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 2,645,991 shares of Sealed Air Corporation (US:SEE) valued at $111,263,922 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 447,900 shares of Sealed Air Corporation. This represents a change in shares of 490.75% during the quarter. The current value of the position is $0 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (SEE) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

SEE / Sealed Air Corporation Historical Put/Call Ratio
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)
2026-05-11 2026-03-31 13F SEALED AIR CORP COM 81211K100 2,645,991 2,198,091 490.75 111,264 499.61 0.0239
2026-02-13 2025-12-31 13F SEALED AIR CORP COM 81211K100 447,900 199,133 80.05 18,557 111.03 0.0082
2025-11-10 2025-09-30 13F SEALED AIR CORP COM 81211K100 248,767 99,845 67.05 8,794 90.28 0.0039
2025-08-11 2025-06-30 13F SEALED AIR CORP COM 81211K100 148,922 -36,285 -19.59 4,621 -13.66 0.0023
2025-05-12 2025-03-31 13F SEALED AIR CORP COM 81211K100 185,207 28,300 18.04 5,352 0.83 0.0027
2025-02-12 2024-12-31 13F SEALED AIR CORP COM 81211K100 156,907 17,555 12.60 5,308 4.94 0.0031
2024-11-12 2024-09-30 13F SEALED AIR CORP COM 81211K100 139,352 28,645 25.87 5,058 31.34 0.0029
2024-08-12 2024-06-30 13F SEALED AIR CORP COM 81211K100 110,707 5,173 4.90 3,851 -1.89 0.0025
2024-05-10 2024-03-31 13F SEALED AIR CORP COM 81211K100 105,534 -49,871 -32.09 3,926 -30.84 0.0026
2024-02-09 2023-12-31 13F SEALED AIR CORP COM 81211K100 155,405 -165,729 -51.61 5,675 -46.22 0.0040
2023-12-06 2023-09-30 13F/A-1 SEALED AIR CORP COM 81211K100 321,134 -23,006 -6.69 10,552 -23.34 0.0079
2023-11-09 2023-09-30 13F SEALED AIR CORP COM 81211K100 321,134 -23,006 10,552 0.0079
2023-08-10 2023-06-30 13F SEALED AIR CORP COM 81211K100 344,140 181,548 111.66 13,766 84.42 0.0090
2023-05-11 2023-03-31 13F SEALED AIR CORP COM 81211K100 162,592 -15,942 -8.93 7,465 -16.18 0.0052
2023-02-09 2022-12-31 13F SEALED AIR CORP COM 81211K100 178,534 695 0.39 8,905 12.49 0.0071
2022-11-10 2022-09-30 13F SEALED AIR CORP COM 81211K100 177,839 -17,181 -8.81 7,916 -29.68 0.0057
2022-08-10 2022-06-30 13F SEALED AIR CORP COM 81211K100 195,020 -11,619 -5.62 11,257 -18.65 0.0084
2022-05-12 2022-03-31 13F SEALED AIR CORP COM 81211K100 206,639 61,563 42.43 13,837 41.37 0.0084
2022-02-10 2021-12-31 13F SEALED AIR CORP COM 81211K100 145,076 38,697 36.38 9,788 67.95 0.0052
2021-11-10 2021-09-30 13F SEALED AIR CORP COM 81211K100 106,379 -47,415 -30.83 5,828 -36.04 0.0034
2021-08-10 2021-06-30 13F SEALED AIR CORP COM 81211K100 153,794 18,492 13.67 9,112 46.99 0.0055
2021-05-13 2021-03-31 13F SEALED AIR CORP COM 81211K100 135,302 4,469 3.42 6,199 3.49 0.0040
2021-02-11 2020-12-31 13F SEALED AIR CORP COM 81211K100 130,833 -49,286 -27.36 5,990 -14.33 0.0035
2020-11-12 2020-09-30 13F SEALED AIR CORP COM 81211K100 180,119 -43,378 -19.41 6,992 -4.77 0.0046
2020-08-12 2020-06-30 13F SEALED AIR CORP COM 81211K100 223,497 84,972 61.34 7,342 114.49 0.0057
2020-05-12 2020-03-31 13F SEALED AIR CORP COM 81211K100 138,525 -142,503 -50.71 3,423 -69.42 0.0031
2020-02-12 2019-12-31 13F SEALED AIR CORP COM 81211K100 281,028 124,259 79.26 11,192 72.00 0.0081
2019-11-08 2019-09-30 13F SEALED AIR CORP COM 81211K100 156,769 -15,554 -9.03 6,507 -11.73 0.0052
2019-08-12 2019-06-30 13F SEALED AIR CORP COM 81211K100 172,323 -23,207 -11.87 7,372 -18.14 0.0060
2019-05-13 2019-03-31 13F SEALED AIR CORP COM 81211K100 195,530 187 0.10 9,006 32.32 0.0087
2019-02-12 2018-12-31 13F SEALED AIR CORP COM 81211K100 195,343 -155,276 -44.29 6,806 -51.66 0.0069
2018-11-13 2018-09-30 13F SEALED AIR CORP COM 81211K100 350,619 312,986 831.68 14,079 781.59 0.0126
2018-08-10 2018-06-30 13F SEALED AIR CORP COM 81211K100 37,633 28,941 332.96 1,597 330.46 0.0015
2018-05-11 2018-03-31 13F SEALED AIR CORP COM 81211K100 8,692 -28,697 -76.75 371 -79.87 0.0003
2018-02-12 2017-12-31 13F SEALED AIR CORP COM 81211K100 37,389 13,463 56.27 1,843 80.16 0.0015
2017-11-13 2017-09-30 13F SEALED AIR CORP COM 81211K100 23,926 11,444 91.68 1,023 83.01 0.0008
2017-08-11 2017-06-30 13F SEALED AIR CORP COM 81211K100 12,482 -71,822 -85.19 559 -84.78 0.0005
2017-05-12 2017-03-31 13F SEALED AIR CORP COM 81211K100 84,304 31,371 59.27 3,674 53.08 0.0033
2017-02-10 2016-12-31 13F SEALED AIR CORP COM 81211K100 52,933 47,550 883.34 2,400 871.66 0.0022
2016-11-10 2016-09-30 13F SEALED AIR CORP COM 81211K100 5,383 1,349 33.44 247 32.80 0.0002
2016-08-12 2016-06-30 13F SEALED AIR CORP COM 81211K100 4,034 -495,051 -99.19 186 -99.22 0.0002
2016-05-13 2016-03-31 13F SEALED AIR CORP COM 81211K100 499,085 495,698 14,635.31 23,960 15,767.55 0.0269
2016-02-12 2015-12-31 13F SEALED AIR CORP COM 81211K100 3,387 -14,688 -81.26 151 -82.19 0.0002
2015-11-13 2015-09-30 13F SEALED AIR CORP COM 81211K100 18,075 -45,229 -71.45 848 -73.92 0.0008
2015-08-13 2015-06-30 13F SEALED AIR CORP COM 81211K100 63,304 56,782 870.62 3,252 994.95 0.0029
2015-05-14 2015-03-31 13F SEALED AIR CORP COM 81211K100 6,522 2,508 62.48 297 73.68 0.0003
2015-02-17 2014-12-31 13F SEALED AIR CORP COM 81211K100 4,014 894 28.65 171 56.88 0.0002
2014-11-14 2014-09-30 13F SEALED AIR CORP COM 81211K100 3,120 -27,261 -89.73 109 -89.51 0.0001
2014-08-14 2014-06-30 13F SEALED AIR CORP COM 81211K100 30,381 22,865 304.22 1,039 320.65 0.0010
2014-05-15 2014-03-31 13F SEALED AIR CORP COM 81211K100 7,516 -20,617 -73.28 247 -74.22 0.0003
2014-02-14 2013-12-31 13F SEALED AIR CORP COM 81211K100 28,133 -50,171 -64.07 958 -55.02 0.0009
2013-11-14 2013-09-30 13F SEALED AIR CORP COM 81211K100 78,304 -24,074 -23.51 2,130 -13.13 0.0020
2013-08-14 2013-06-30 13F SEALED AIR CORP COM 81211K100 102,378 102,378 2,452 0.0024
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-13 2025-12-31 13F SEALED AIR CORP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-10 2025-09-30 13F SEALED AIR CORP COM Call 282,100 9,972 n/a n/a n/a
2025-02-12 2024-12-31 13F SEALED AIR CORP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-12 2024-09-30 13F SEALED AIR CORP COM Call 36,300 1,318 n/a n/a n/a
2021-05-13 2021-03-31 13F SEALED AIR CORP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F SEALED AIR CORP COM Call 2,500 -45.65 114 -36.31 n/a n/a n/a
2020-11-12 2020-09-30 13F SEALED AIR CORP COM Call 4,600 24.32 179 46.72 n/a n/a n/a
2020-08-12 2020-06-30 13F SEALED AIR CORP COM Call 3,700 -58.89 122 -45.05 n/a n/a n/a
2020-05-12 2020-03-31 13F SEALED AIR CORP COM Call 9,000 -17.43 222 -48.85 n/a n/a n/a
2020-02-12 2019-12-31 13F SEALED AIR CORP COM Call 10,900 -32.30 434 -35.03 n/a n/a n/a
2019-11-08 2019-09-30 13F SEALED AIR CORP COM Call 16,100 182.46 668 173.77 n/a n/a n/a
2019-08-12 2019-06-30 13F SEALED AIR CORP COM Call 5,700 -58.70 244 -61.64 n/a n/a n/a
2019-05-13 2019-03-31 13F SEALED AIR CORP COM Call 13,800 -69.60 636 -59.80 n/a n/a n/a
2019-02-12 2018-12-31 13F SEALED AIR CORP COM Call 45,400 1.11 1,582 -12.26 n/a n/a n/a
2018-11-13 2018-09-30 13F SEALED AIR CORP COM Call 44,900 259.20 1,803 239.55 n/a n/a n/a
2018-08-10 2018-06-30 13F SEALED AIR CORP COM Call 12,500 52.44 531 51.28 n/a n/a n/a
2018-05-11 2018-03-31 13F SEALED AIR CORP COM Call 8,200 -93.99 351 -94.78 n/a n/a n/a
2018-02-12 2017-12-31 13F SEALED AIR CORP COM Call 136,500 2,933.33 6,729 3,404.69 n/a n/a n/a
2017-11-13 2017-09-30 13F SEALED AIR CORP COM Call 4,500 -88.97 192 -89.49 n/a n/a n/a
2017-08-11 2017-06-30 13F SEALED AIR CORP COM Call 40,800 615.79 1,827 636.69 n/a n/a n/a
2017-05-12 2017-03-31 13F SEALED AIR CORP COM Call 5,700 -88.60 248 -89.06 n/a n/a n/a
2017-02-10 2016-12-31 13F SEALED AIR CORP COM Call 50,000 6,150.00 2,267 6,027.03 n/a n/a n/a
2016-11-10 2016-09-30 13F SEALED AIR CORP COM Call 800 -83.67 37 -83.56 n/a n/a n/a
2016-08-12 2016-06-30 13F SEALED AIR CORP COM Call 4,900 308.33 225 287.93 n/a n/a n/a
2016-05-13 2016-03-31 13F SEALED AIR CORP COM Call 1,200 500.00 58 544.44 n/a n/a n/a
2016-02-12 2015-12-31 13F SEALED AIR CORP COM Call 200 -99.90 9 -99.90 n/a n/a n/a
2015-11-13 2015-09-30 13F SEALED AIR CORP COM Call 195,600 2,375.95 9,170 2,158.62 n/a n/a n/a
2015-08-13 2015-06-30 13F SEALED AIR CORP COM Call 7,900 54.90 406 75.00 n/a n/a n/a
2015-05-14 2015-03-31 13F SEALED AIR CORP COM Call 5,100 232 n/a n/a n/a
2014-11-14 2014-09-30 13F SEALED AIR CORP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-08-14 2014-06-30 13F SEALED AIR CORP COM Call 125,000 4,271 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-08-10 2021-06-30 13F SEALED AIR CORP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-13 2021-03-31 13F SEALED AIR CORP COM Put 30,000 29,900.00 1,375 27,400.00 n/a n/a n/a
2021-02-11 2020-12-31 13F SEALED AIR CORP COM Put 100 -95.45 5 -94.12 n/a n/a n/a
2020-11-12 2020-09-30 13F SEALED AIR CORP COM Put 2,200 -35.29 85 -24.11 n/a n/a n/a
2020-08-12 2020-06-30 13F SEALED AIR CORP COM Put 3,400 -56.41 112 -41.97 n/a n/a n/a
2020-05-12 2020-03-31 13F SEALED AIR CORP COM Put 7,800 39.29 193 -13.45 n/a n/a n/a
2020-02-12 2019-12-31 13F SEALED AIR CORP COM Put 5,600 -13.85 223 -17.41 n/a n/a n/a
2019-11-08 2019-09-30 13F SEALED AIR CORP COM Put 6,500 -18.75 270 -21.05 n/a n/a n/a
2019-08-12 2019-06-30 13F SEALED AIR CORP COM Put 8,000 2,566.67 342 2,342.86 n/a n/a n/a
2019-05-13 2019-03-31 13F SEALED AIR CORP COM Put 300 -99.01 14 -98.67 n/a n/a n/a
2019-02-12 2018-12-31 13F SEALED AIR CORP COM Put 30,300 -2.26 1,055 -15.26 n/a n/a n/a
2018-11-13 2018-09-30 13F SEALED AIR CORP COM Put 31,000 376.92 1,245 351.09 n/a n/a n/a
2018-08-10 2018-06-30 13F SEALED AIR CORP COM Put 6,500 490.91 276 487.23 n/a n/a n/a
2018-05-11 2018-03-31 13F SEALED AIR CORP COM Put 1,100 -85.71 47 -87.63 n/a n/a n/a
2018-02-12 2017-12-31 13F SEALED AIR CORP COM Put 7,700 54.00 380 77.57 n/a n/a n/a
2017-11-13 2017-09-30 13F SEALED AIR CORP COM Put 5,000 284.62 214 268.97 n/a n/a n/a
2017-08-11 2017-06-30 13F SEALED AIR CORP COM Put 1,300 1,200.00 58 1,350.00 n/a n/a n/a
2017-05-12 2017-03-31 13F SEALED AIR CORP COM Put 100 4 n/a n/a n/a
2016-11-10 2016-09-30 13F SEALED AIR CORP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-08-12 2016-06-30 13F SEALED AIR CORP COM Put 129,700 3.51 5,962 -0.88 n/a n/a n/a
2016-05-13 2016-03-31 13F SEALED AIR CORP COM Put 125,300 11,290.91 6,015 12,175.51 n/a n/a n/a
2016-02-12 2015-12-31 13F SEALED AIR CORP COM Put 1,100 -66.67 49 -68.39 n/a n/a n/a
2015-11-13 2015-09-30 13F SEALED AIR CORP COM Put 3,300 -29.79 155 -35.68 n/a n/a n/a
2015-08-13 2015-06-30 13F SEALED AIR CORP COM Put 4,700 4,600.00 241 4,720.00 n/a n/a n/a
2015-05-14 2015-03-31 13F SEALED AIR CORP COM Put 100 5 n/a n/a n/a
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.