Telephone and Data Systems, Inc.
US ˙ NYSE ˙ US8794338298

SecurityTDS / Telephone and Data Systems, Inc.
InstitutionCss Llc/il
Latest Disclosed Ownership25,939 shares
Latest Disclosed Value $ 1,092,032
Css Llc/il ownership in TDS / Telephone and Data Systems, Inc.

On May 15, 2026 - Css Llc/il filed a 13F-HR form disclosing ownership of 25,939 shares of Telephone and Data Systems, Inc. (US:TDS) valued at $1,092,032 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 19,835 shares of Telephone and Data Systems, Inc.. This represents a change in shares of 30.77% during the quarter. The current value of the position is $1,029,260 USD.

Css Llc/il has a history of taking positions in derivatives of the underlying security (TDS) 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.

TDS / Telephone and Data Systems, 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)
2026-05-15 2026-03-31 13F TELEPHONE & DATA SYS COM NEW 879433829 25,939 6,104 30.77 1,092 34.32 0.0523
2026-02-17 2025-12-31 13F TELEPHONE & DATA SYS COM NEW 879433829 19,835 335 1.72 813 6.27 0.0361
2025-11-13 2025-09-30 13F TELEPHONE & DATA SYS COM NEW 879433829 19,500 3,500 21.88 765 34.45 0.0343
2025-08-14 2025-06-30 13F TELEPHONE & DATA SYS COM NEW 879433829 16,000 -3,000 -15.79 569 -22.69 0.0265
2025-05-15 2025-03-31 13F TELEPHONE & DATA SYS COM NEW 879433829 19,000 3,000 18.75 736 35.05 0.0404
2025-02-18 2024-12-31 13F TELEPHONE & DATA SYS COM NEW 879433829 16,000 -3,000 -15.79 546 23.58 0.0241
2024-11-14 2024-09-30 13F TELEPHONE & DATA SYS COM NEW 879433829 19,000 1,000 5.56 442 18.23 0.0202
2024-08-14 2024-06-30 13F TELEPHONE & DATA SYS COM NEW 879433829 18,000 18,000 373 0.0191
2019-11-14 2019-09-30 13F TELEPHONE & DATA SYS COM NEW 879433829 0 -3,500 -100.00 0 -100.00
2019-08-14 2019-06-30 13F TELEPHONE & DATA SYS COM NEW 879433829 3,500 3,500 106 0.0061
2016-11-14 2016-09-30 13F TELEPHONE & DATA SYS COM NEW 879433829 0 -9,800 -100.00 0 -100.00
2016-08-15 2016-06-30 13F TELEPHONE & DATA SYS COM NEW 879433829 9,800 -23,802 -70.84 291 -71.22 0.0195
2016-05-16 2016-03-31 13F TELEPHONE & DATA SYS COM NEW 879433829 33,602 -5,735 -14.58 1,011 -0.79 0.0622
2016-02-16 2015-12-31 13F TELEPHONE & DATA SYS COM NEW 879433829 39,337 29,337 293.37 1,019 307.60 0.0605
2015-11-16 2015-09-30 13F TELEPHONE & DATA SYS COM NEW 879433829 10,000 -90 -0.89 250 -15.82 0.0147
2015-08-14 2015-06-30 13F TELEPHONE & DATA SYS COM NEW 879433829 10,090 -200 -1.94 297 16.02 0.0138
2015-05-15 2015-03-31 13F TELEPHONE & DATA SYS COM NEW 879433829 10,290 -22,520 -68.64 256 -69.08 0.0130
2015-02-17 2014-12-31 13F TELEPHONE & DATA SYS COM NEW 879433829 32,810 -42,805 -56.61 828 -54.30 0.0411
2014-11-14 2014-09-30 13F TELEPHONE & DATA SYS COM NEW 879433829 75,615 -83,971 -52.62 1,812 -56.52 0.0878
2014-08-14 2014-06-30 13F TELEPHONE & DATA SYS COM NEW 879433829 159,586 -60,619 -27.53 4,167 -27.79 0.1730
2014-05-15 2014-03-31 13F TELEPHONE & DATA SYS COM NEW 879433829 220,205 -14,960 -6.36 5,771 -4.82 0.2909
2014-02-14 2013-12-31 13F TELEPHONE & DATA SYS COM NEW 879433829 235,165 235,165 6,063 0.2909
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
(%)
2025-02-18 2024-12-31 13F TELEPHONE & DATA SYS COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F TELEPHONE & DATA SYS COM NEW Call 2,000 -75.00 46 -72.12 n/a n/a n/a
2024-08-14 2024-06-30 13F TELEPHONE & DATA SYS COM NEW Call 8,000 166 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
(%)
2014-11-14 2014-09-30 13F TELEPHONE & DATA SYS COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2014-08-14 2014-06-30 13F TELEPHONE & DATA SYS COM NEW Put 20,100 0.00 525 -0.38 n/a n/a n/a
2014-05-15 2014-03-31 13F TELEPHONE & DATA SYS COM NEW Put 20,100 527 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.