NetApp, Inc.
US ˙ NasdaqGS ˙ US64110D1046

SecurityNTAP / NetApp, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership3,776,466 shares
Latest Disclosed Value $ 386,672,354
Citigroup Inc ownership in NTAP / NetApp, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 3,776,466 shares of NetApp, Inc. (US:NTAP) valued at $386,672,354 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,954,808 shares of NetApp, Inc.. This represents a change in shares of 27.81% during the quarter. The current value of the position is $683,842,463 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (NTAP) 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.

NTAP / NetApp, Inc. 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 NETAPP COM 64110D104 3,776,466 821,658 27.81 386,672 22.20 0.1649
2026-02-13 2025-12-31 13F NETAPP COM 64110D104 2,954,808 2,027,283 218.57 316,430 187.99 0.1397
2025-11-10 2025-09-30 13F NETAPP COM 64110D104 927,525 634,085 216.09 109,875 251.42 0.0490
2025-08-11 2025-06-30 13F NETAPP COM 64110D104 293,440 -23,942 -7.54 31,266 12.15 0.0154
2025-05-12 2025-03-31 13F NETAPP COM 64110D104 317,382 82,138 34.92 27,879 2.09 0.0142
2025-02-12 2024-12-31 13F NETAPP COM 64110D104 235,244 -53,513 -18.53 27,307 -23.43 0.0162
2024-11-12 2024-09-30 13F NETAPP COM 64110D104 288,757 -19,167 -6.22 35,664 -10.08 0.0207
2024-08-12 2024-06-30 13F NETAPP COM 64110D104 307,924 -69,672 -18.45 39,661 0.06 0.0254
2024-05-10 2024-03-31 13F NETAPP COM 64110D104 377,596 34,670 10.11 39,636 31.11 0.0260
2024-02-09 2023-12-31 13F NETAPP COM 64110D104 342,926 -92,314 -21.21 30,232 -8.46 0.0213
2023-12-06 2023-09-30 13F/A-1 NETAPP COM 64110D104 435,240 1,262 0.29 33,026 -0.39 0.0247
2023-11-09 2023-09-30 13F NETAPP COM 64110D104 435,240 1,262 33,026 0.0247
2023-08-10 2023-06-30 13F NETAPP COM 64110D104 433,978 -86,514 -16.62 33,156 -0.23 0.0217
2023-05-11 2023-03-31 13F NETAPP COM 64110D104 520,492 86,379 19.90 33,233 27.47 0.0233
2023-02-09 2022-12-31 13F NETAPP COM 64110D104 434,113 -53,298 -10.93 26,073 -13.51 0.0208
2022-11-10 2022-09-30 13F NETAPP COM 64110D104 487,411 46,837 10.63 30,146 4.88 0.0216
2022-08-10 2022-06-30 13F NETAPP COM 64110D104 440,574 17,547 4.15 28,743 -18.14 0.0214
2022-05-12 2022-03-31 13F NETAPP COM 64110D104 423,027 32,717 8.38 35,112 -2.21 0.0213
2022-02-10 2021-12-31 13F NETAPP COM 64110D104 390,310 162,123 71.05 35,904 75.29 0.0192
2021-11-10 2021-09-30 13F NETAPP COM 64110D104 228,187 -36,784 -13.88 20,483 -5.52 0.0121
2021-08-10 2021-06-30 13F NETAPP COM 64110D104 264,971 28,918 12.25 21,680 26.39 0.0130
2021-05-13 2021-03-31 13F NETAPP COM 64110D104 236,053 861 0.37 17,153 10.10 0.0111
2021-02-11 2020-12-31 13F NETAPP COM 64110D104 235,192 -54,064 -18.69 15,579 22.86 0.0092
2020-11-12 2020-09-30 13F NETAPP COM 64110D104 289,256 33,036 12.89 12,680 11.53 0.0083
2020-08-12 2020-06-30 13F NETAPP COM 64110D104 256,220 -79,915 -23.77 11,369 -18.86 0.0089
2020-05-12 2020-03-31 13F NETAPP COM 64110D104 336,135 158,043 88.74 14,012 26.41 0.0127
2020-02-12 2019-12-31 13F NETAPP COM 64110D104 178,092 -94,553 -34.68 11,085 -22.57 0.0080
2019-11-08 2019-09-30 13F NETAPP COM 64110D104 272,645 -61,980 -18.52 14,316 -30.66 0.0113
2019-08-12 2019-06-30 13F NETAPP COM 64110D104 334,625 289,873 647.73 20,647 565.39 0.0167
2019-05-13 2019-03-31 13F NETAPP COM 64110D104 44,752 22,986 105.61 3,103 138.88 0.0030
2019-02-12 2018-12-31 13F NETAPP COM 64110D104 21,766 -142,969 -86.79 1,299 -90.82 0.0013
2018-11-13 2018-09-30 13F NETAPP COM 64110D104 164,735 -227,876 -58.04 14,150 -54.10 0.0126
2018-08-10 2018-06-30 13F NETAPP COM 64110D104 392,611 -97,451 -19.89 30,831 1.98 0.0283
2018-05-11 2018-03-31 13F NETAPP COM 64110D104 490,062 314,087 178.48 30,232 210.55 0.0249
2018-02-12 2017-12-31 13F NETAPP COM 64110D104 175,975 -27,298 -13.43 9,735 9.43 0.0078
2017-11-13 2017-09-30 13F NETAPP COM 64110D104 203,273 -110,167 -35.15 8,896 -29.13 0.0073
2017-08-11 2017-06-30 13F NETAPP COM 64110D104 313,440 155,871 98.92 12,553 90.37 0.0113
2017-05-12 2017-03-31 13F NETAPP COM 64110D104 157,569 -12,254 -7.22 6,594 10.10 0.0059
2017-02-10 2016-12-31 13F NETAPP COM 64110D104 169,823 17,544 11.52 5,989 9.79 0.0054
2016-11-10 2016-09-30 13F NETAPP COM 64110D104 152,279 47,267 45.01 5,455 111.27 0.0051
2016-08-12 2016-06-30 13F NETAPP COM 64110D104 105,012 47,875 83.79 2,582 65.62 0.0026
2016-05-13 2016-03-31 13F NETAPP COM 64110D104 57,137 -105,017 -64.76 1,559 -63.76 0.0018
2016-02-12 2015-12-31 13F NETAPP COM 64110D104 162,154 -21,243 -11.58 4,302 -20.74 0.0043
2015-11-13 2015-09-30 13F NETAPP COM 64110D104 183,397 -80,371 -30.47 5,428 -34.79 0.0051
2015-08-13 2015-06-30 13F NETAPP COM 64110D104 263,768 -12,173 -4.41 8,324 -14.94 0.0074
2015-05-14 2015-03-31 13F NETAPP COM 64110D104 275,941 150,669 120.27 9,786 88.45 0.0095
2015-02-17 2014-12-31 13F NETAPP COM 64110D104 125,272 29,445 30.73 5,193 26.14 0.0046
2014-11-14 2014-09-30 13F NETAPP COM 64110D104 95,827 -68,737 -41.77 4,117 -31.50 0.0036
2014-08-14 2014-06-30 13F NETAPP COM 64110D104 164,564 35,249 27.26 6,010 25.97 0.0058
2014-05-15 2014-03-31 13F NETAPP COM 64110D104 129,315 -109,901 -45.94 4,771 -51.52 0.0049
2014-02-14 2013-12-31 13F NETAPP COM 64110D104 239,216 56,642 31.02 9,841 26.46 0.0089
2013-11-14 2013-09-30 13F NETAPP COM 64110D104 182,574 -34,244 -15.79 7,782 -4.98 0.0073
2013-08-14 2013-06-30 13F NETAPP COM 64110D104 216,818 216,818 8,190 0.0081
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
(%)
2025-05-12 2025-03-31 13F NETAPP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-12 2024-12-31 13F NETAPP COM Call 123,500 -19.54 14,336 -24.39 n/a n/a n/a
2024-11-12 2024-09-30 13F NETAPP COM Call 153,500 31.20 18,959 25.81 n/a n/a n/a
2024-08-12 2024-06-30 13F NETAPP COM Call 117,000 14.71 15,070 40.75 n/a n/a n/a
2024-05-10 2024-03-31 13F NETAPP COM Call 102,000 10,707 n/a n/a n/a
2021-05-13 2021-03-31 13F NETAPP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F NETAPP COM Call 5,600 -41.05 371 -10.82 n/a n/a n/a
2020-11-12 2020-09-30 13F NETAPP COM Call 9,500 -15.18 416 -16.30 n/a n/a n/a
2020-08-12 2020-06-30 13F NETAPP COM Call 11,200 -87.87 497 -87.08 n/a n/a n/a
2020-05-12 2020-03-31 13F NETAPP COM Call 92,300 281.40 3,848 155.51 n/a n/a n/a
2020-02-12 2019-12-31 13F NETAPP COM Call 24,200 -32.96 1,506 -20.57 n/a n/a n/a
2019-11-08 2019-09-30 13F NETAPP COM Call 36,100 -0.55 1,896 -15.36 n/a n/a n/a
2019-08-12 2019-06-30 13F NETAPP COM Call 36,300 348.15 2,240 298.58 n/a n/a n/a
2019-05-13 2019-03-31 13F NETAPP COM Call 8,100 -51.79 562 -43.91 n/a n/a n/a
2019-02-12 2018-12-31 13F NETAPP COM Call 16,800 -6.15 1,002 -34.81 n/a n/a n/a
2018-11-13 2018-09-30 13F NETAPP COM Call 17,900 -44.41 1,537 -39.22 n/a n/a n/a
2018-08-10 2018-06-30 13F NETAPP COM Call 32,200 -12.26 2,529 11.70 n/a n/a n/a
2018-05-11 2018-03-31 13F NETAPP COM Call 36,700 -23.54 2,264 -14.73 n/a n/a n/a
2018-02-12 2017-12-31 13F NETAPP COM Call 48,000 182.35 2,655 256.85 n/a n/a n/a
2017-11-13 2017-09-30 13F NETAPP COM Call 17,000 6.25 744 16.07 n/a n/a n/a
2017-08-11 2017-06-30 13F NETAPP COM Call 16,000 -43.06 641 -45.49 n/a n/a n/a
2017-05-12 2017-03-31 13F NETAPP COM Call 28,100 -47.57 1,176 -37.78 n/a n/a n/a
2017-02-10 2016-12-31 13F NETAPP COM Call 53,600 -20.59 1,890 -21.84 n/a n/a n/a
2016-11-10 2016-09-30 13F NETAPP COM Call 67,500 65.85 2,418 141.56 n/a n/a n/a
2016-08-12 2016-06-30 13F NETAPP COM Call 40,700 73.19 1,001 56.16 n/a n/a n/a
2016-05-13 2016-03-31 13F NETAPP COM Call 23,500 -44.44 641 -42.87 n/a n/a n/a
2016-02-12 2015-12-31 13F NETAPP COM Call 42,300 -12.78 1,122 -21.87 n/a n/a n/a
2015-11-13 2015-09-30 13F NETAPP COM Call 48,500 -39.60 1,436 -43.33 n/a n/a n/a
2015-08-13 2015-06-30 13F NETAPP COM Call 80,300 108.03 2,534 85.10 n/a n/a n/a
2015-05-14 2015-03-31 13F NETAPP COM Call 38,600 -82.51 1,369 -85.03 n/a n/a n/a
2015-02-17 2014-12-31 13F NETAPP COM Call 220,700 -6.64 9,148 -9.93 n/a n/a n/a
2014-11-14 2014-09-30 13F NETAPP COM Call 236,400 153.38 10,156 198.09 n/a n/a n/a
2014-08-14 2014-06-30 13F NETAPP COM Call 93,300 35.02 3,407 33.61 n/a n/a n/a
2014-05-15 2014-03-31 13F NETAPP COM Call 69,100 -45.46 2,550 -51.07 n/a n/a n/a
2014-02-14 2013-12-31 13F NETAPP COM Call 126,700 -63.02 5,212 -64.30 n/a n/a n/a
2013-11-14 2013-09-30 13F NETAPP COM Call 342,600 55.73 14,601 75.66 n/a n/a n/a
2013-08-14 2013-06-30 13F NETAPP COM Call 220,000 8,312 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
(%)
2025-08-11 2025-06-30 13F NETAPP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-12 2025-03-31 13F NETAPP COM Put 8,000 -93.75 703 -95.28 n/a n/a n/a
2025-02-12 2024-12-31 13F NETAPP COM Put 128,000 0.00 14,858 -6.02 n/a n/a n/a
2024-11-12 2024-09-30 13F NETAPP COM Put 128,000 8.47 15,809 4.02 n/a n/a n/a
2024-08-12 2024-06-30 13F NETAPP COM Put 118,000 0.00 15,198 22.70 n/a n/a n/a
2024-05-10 2024-03-31 13F NETAPP COM Put 118,000 12,386 n/a n/a n/a
2021-05-13 2021-03-31 13F NETAPP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F NETAPP COM Put 34,300 -3.92 2,272 45.18 n/a n/a n/a
2020-11-12 2020-09-30 13F NETAPP COM Put 35,700 -41.19 1,565 -41.89 n/a n/a n/a
2020-08-12 2020-06-30 13F NETAPP COM Put 60,700 -73.82 2,693 -72.15 n/a n/a n/a
2020-05-12 2020-03-31 13F NETAPP COM Put 231,900 405.23 9,668 238.40 n/a n/a n/a
2020-02-12 2019-12-31 13F NETAPP COM Put 45,900 -6.52 2,857 10.82 n/a n/a n/a
2019-11-08 2019-09-30 13F NETAPP COM Put 49,100 -19.24 2,578 -31.27 n/a n/a n/a
2019-08-12 2019-06-30 13F NETAPP COM Put 60,800 170.22 3,751 140.45 n/a n/a n/a
2019-05-13 2019-03-31 13F NETAPP COM Put 22,500 -49.10 1,560 -40.84 n/a n/a n/a
2019-02-12 2018-12-31 13F NETAPP COM Put 44,200 -46.81 2,637 -63.06 n/a n/a n/a
2018-11-13 2018-09-30 13F NETAPP COM Put 83,100 30.66 7,138 42.90 n/a n/a n/a
2018-08-10 2018-06-30 13F NETAPP COM Put 63,600 132.97 4,995 196.62 n/a n/a n/a
2018-05-11 2018-03-31 13F NETAPP COM Put 27,300 -68.00 1,684 -64.31 n/a n/a n/a
2018-02-12 2017-12-31 13F NETAPP COM Put 85,300 15.90 4,719 46.51 n/a n/a n/a
2017-11-13 2017-09-30 13F NETAPP COM Put 73,600 -6.00 3,221 2.71 n/a n/a n/a
2017-08-11 2017-06-30 13F NETAPP COM Put 78,300 147.78 3,136 137.22 n/a n/a n/a
2017-05-12 2017-03-31 13F NETAPP COM Put 31,600 -61.60 1,322 -54.46 n/a n/a n/a
2017-02-10 2016-12-31 13F NETAPP COM Put 82,300 43.38 2,903 41.20 n/a n/a n/a
2016-11-10 2016-09-30 13F NETAPP COM Put 57,400 11.03 2,056 61.76 n/a n/a n/a
2016-08-12 2016-06-30 13F NETAPP COM Put 51,700 47.29 1,271 32.67 n/a n/a n/a
2016-05-13 2016-03-31 13F NETAPP COM Put 35,100 -53.94 958 -52.62 n/a n/a n/a
2016-02-12 2015-12-31 13F NETAPP COM Put 76,200 19.81 2,022 7.38 n/a n/a n/a
2015-11-13 2015-09-30 13F NETAPP COM Put 63,600 -68.37 1,883 -70.33 n/a n/a n/a
2015-08-13 2015-06-30 13F NETAPP COM Put 201,100 90.08 6,347 69.16 n/a n/a n/a
2015-05-14 2015-03-31 13F NETAPP COM Put 105,800 -34.08 3,752 -43.60 n/a n/a n/a
2015-02-17 2014-12-31 13F NETAPP COM Put 160,500 -31.32 6,653 -33.74 n/a n/a n/a
2014-11-14 2014-09-30 13F NETAPP COM Put 233,700 91.09 10,040 124.81 n/a n/a n/a
2014-08-14 2014-06-30 13F NETAPP COM Put 122,300 162.45 4,466 159.65 n/a n/a n/a
2014-05-15 2014-03-31 13F NETAPP COM Put 46,600 -55.70 1,720 -60.26 n/a n/a n/a
2014-02-14 2013-12-31 13F NETAPP COM Put 105,200 -26.43 4,328 -28.99 n/a n/a n/a
2013-11-14 2013-09-30 13F NETAPP COM Put 143,000 2.66 6,095 15.81 n/a n/a n/a
2013-08-14 2013-06-30 13F NETAPP COM Put 139,300 5,263 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.