Belden Inc.
US ˙ NYSE ˙ US0774541066

SecurityBDC / Belden Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership142,519 shares
Latest Disclosed Value $ 16,610,777
Sei Investments Co ownership in BDC / Belden Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 142,519 shares of Belden Inc. (US:BDC) valued at $16,610,589 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 139,300 shares of Belden Inc.. This represents a change in shares of 2.31% during the quarter. The current value of the position is $15,762,601 USD.

Sei Investments Co has a history of taking positions in derivatives of the underlying security (BDC) in the form of stock options.

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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Institutional Put/Call Ratios
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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.

BDC / Belden 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)
2026-02-13 2025-12-31 13F BELDEN COM 077454106 142,519 3,219 2.31 16,611 -0.85 0.0164
2025-11-13 2025-09-30 13F BELDEN COM 077454106 139,300 -27,434 -16.45 16,753 -13.23 0.0180
2025-08-14 2025-06-30 13F BELDEN COM 077454106 166,734 16,304 10.84 19,308 28.04 0.0224
2025-05-14 2025-03-31 13F/A-1 BELDEN COM 077454106 150,430 -10,974 -6.80 15,080 -17.03 0.0194
2025-05-13 2025-03-31 13F BELDEN COM 077454106 157,016 -4,388 17,378 0.0189
2025-02-11 2024-12-31 13F BELDEN COM 077454106 161,404 -2,348 -1.43 18,176 -5.24 0.0233
2024-11-12 2024-09-30 13F BELDEN COM 077454106 163,752 -32,766 -16.67 19,180 4.05 0.0249
2024-08-13 2024-06-30 13F BELDEN COM 077454106 196,518 -39,376 -16.69 18,434 -15.62 0.0261
2024-05-07 2024-03-31 13F BELDEN COM 077454106 235,894 -4,713 -1.96 21,846 17.53 0.0320
2024-02-14 2023-12-31 13F BELDEN COM 077454106 240,607 -19,327 -7.44 18,587 -25.94 0.0298
2023-11-14 2023-09-30 13F BELDEN COM 077454106 259,934 -26,102 -9.13 25,097 -8.27 0.0451
2023-08-11 2023-06-30 13F BELDEN COM 077454106 286,036 5,683 2.03 27,359 12.47 0.0477
2023-05-12 2023-03-31 13F BELDEN COM 077454106 280,353 12,677 4.74 24,326 26.39 0.0452
2023-02-10 2022-12-31 13F BELDEN COM 077454106 267,676 -51,514 -16.14 19,246 0.46 0.0428
2022-11-14 2022-09-30 13F BELDEN COM 077454106 319,190 -4,913 -1.52 19,158 10.89 0.0427
2022-08-15 2022-06-30 13F BELDEN COM 077454106 324,103 46,980 16.95 17,276 12.36 0.0373
2022-05-13 2022-03-31 13F BELDEN COM 077454106 277,123 78,923 39.82 15,376 17.90 0.0309
2022-02-14 2021-12-31 13F BELDEN COM 077454106 198,200 -17,409 -8.07 13,042 3.68 0.0245
2021-11-12 2021-09-30 13F BELDEN COM 077454106 215,609 -32,180 -12.99 12,579 0.18 0.0264
2021-08-06 2021-06-30 13F BELDEN COM 077454106 247,789 -17,997 -6.77 12,556 6.71 0.0278
2021-05-12 2021-03-31 13F BELDEN COM 077454106 265,786 11,641 4.58 11,766 10.73 0.0296
2021-02-08 2020-12-31 13F BELDEN COM 077454106 254,145 17,659 7.47 10,626 44.89 0.0275
2020-12-04 2020-09-30 13F/A-1 BELDEN COM 077454106 236,486 23,451 11.01 7,334 6.21 0.0212
2020-11-06 2020-09-30 13F BELDEN COM 077454106 236,632 23,597 7,339 17,670.6803
2020-08-17 2020-06-30 13F/A-1 BELDEN COM 077454106 213,035 22,498 11.81 6,905 0.83 0.0214
2020-08-11 2020-06-30 13F BELDEN COM 077454106 175,188 -15,349 9,568 25,953.7093
2020-05-14 2020-03-31 13F BELDEN COM 077454106 190,537 15,233 8.69 6,848 -29.01 0.0252
2020-02-06 2019-12-31 13F BELDEN COM 077454106 175,304 20,623 13.33 9,647 17.09 0.0288
2019-11-12 2019-09-30 13F BELDEN COM 077454106 154,681 8,521 5.83 8,239 -5.34 0.0211
2019-08-14 2019-06-30 13F BELDEN COM 077454106 146,160 4,449 3.14 8,704 14.53 0.0284
2019-05-15 2019-03-31 13F BELDEN COM 077454106 141,711 -21,194 -13.01 7,600 -34.31 0.0255
2019-02-13 2018-12-31 13F BELDEN COM 077454106 162,905 -16,702 -9.30 11,570 -9.90 0.0412
2018-11-08 2018-09-30 13F BELDEN COM 077454106 179,607 8,867 5.19 12,842 23.07 0.0465
2018-08-03 2018-06-30 13F BELDEN COM 077454106 170,740 167,022 4,492.25 10,435 3,976.17 0.0355
2018-05-11 2018-03-31 13F BELDEN COM 077454106 3,718 -70,143 -94.97 256 -95.75 0.0010
2018-02-08 2017-12-31 13F BELDEN COM 077454106 73,861 39,572 115.41 6,027 118.77 0.0209
2017-11-06 2017-09-30 13F BELDEN COM 077454106 34,289 -2,787 -7.52 2,755 -1.50 0.0098
2017-07-31 2017-06-30 13F BELDEN COM 077454106 37,076 19,967 116.70 2,797 136.23 0.0112
2017-05-05 2017-03-31 13F BELDEN COM 077454106 17,109 -6,421 -27.29 1,184 -36.62 0.0052
2017-02-02 2016-12-31 13F BELDEN COM 077454106 23,530 14,028 147.63 1,868 184.76 0.0090
2016-11-04 2016-09-30 13F BELDEN COM 077454106 9,502 8,248 657.74 656 774.67 0.0033
2016-08-11 2016-06-30 13F BELDEN COM 077454106 1,254 1,247 17,814.29 75 0.0004
2016-05-10 2016-03-31 13F/A-1 BELDEN COM 077454106 7 -31 -81.58 0 -100.00
2016-02-03 2015-12-31 13F BELDEN COM 077454106 38 -58,460 -99.94 2 -99.93 0.0000
2015-11-02 2015-09-30 13F/A-1 BELDEN COM 077454106 58,498 36,517 166.13 2,732 53.05 0.0251
2015-10-30 2015-09-30 13F BELDEN COM 077454106 58,498 2,733
2015-08-07 2015-06-30 13F/A-1 BELDEN COM 077454106 21,981 -2,765 -11.17 1,785 -22.93 0.0161
2015-08-04 2015-06-30 13F BELDEN COM 077454106 21,981 -2,765 1,785 0.0161
2015-05-14 2015-03-31 13F/A-1 BELDEN COM 077454106 24,746 3,263 15.19 2,316 36.80 0.0201
2015-05-01 2015-03-31 13F BEAZER HOMES USA PUT 077454106 24,746 24,746 2,316 0.0201
2015-02-10 2014-12-31 13F BELDEN COM 077454106 21,483 21,483 1,693 0.0150
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
(%)
2015-05-01 2015-03-31 13F BEAZER HOMES USA PUT 24,746 2,316 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.