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Held by 180 of 5,944 reporting institutions (91th percentile) — extremely crowded.
Data as of Q1 2026
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Total shares institutions bought (green) vs sold (red) each quarter across all holders.
Inferred from quarter-over-quarter change in each fund's 13F position (new stakes count as buys, exits as sells). Not tick-level trades.
How management deployed cash over 8 years — and what it earned on reinvestment.
A reinvestment story — most cash went back into growth rather than to shareholders.
Operating income fell despite reinvestment — a warning on capital productivity. Current ROIC on all capital: -5%. Rough measure (includes maintenance capex).
Cash uses aggregated from the SEC cash-flow statement over 8 fiscal years. "Return on reinvestment" is a rough proxy — operating-income change ÷ cumulative CapEx + M&A — and includes maintenance capex. Educational — not a recommendation.
How much the company owes, how it's trended, and how comfortably it's serviced.
Cash of $117M covers all $10M of scheduled principal — no refinancing pressure. Scheduled principal only (excludes interest & revolver draws). As of 2024-03-31 (10-Q).
Green ≤ 1.5× · amber ≤ 3× · red > 3× (leverage relative to cash earnings).
Thin coverage — earnings barely cover interest. Effective rate ~0.9% on $10M of debt.
Cash of $117M fully covers short-term debt of $417000.
Mostly long-term debt (balance-sheet current vs non-current split). See the maturity ladder above for the year-by-year repayment schedule.
Debt, cash, interest and equity from the SEC balance sheet & income statement. Effective rate = interest ÷ average debt. Maturity ladder from the SEC long-term-debt repayment schedule. Educational — not a recommendation.
EOD close · as of 2026-09-17
How a revenue dollar becomes profit — FY2025
Each value shows its share of revenue below it (common-size).
| Line Item | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | FY2020 | FY2019 | FY2018 |
|---|---|---|---|---|---|---|---|---|
| Revenue | $344.2M 100.0% | $332.1M 100.0% | $219.8M 100.0% | $137.0M 100.0% | $94.1M 100.0% | $62.6M 100.0% | $51.9M 100.0% | $22.8M 100.0% |
| Cost of Revenue | $71.0M 20.6% | $60.2M 18.1% | $45.0M 20.5% | $32.0M 23.4% | $15.8M 16.8% | $9.7M 15.5% | $7.3M 14.1% | $5.3M 23.2% |
| Gross Profit | — | — | — | — | — | $53.0M 84.5% | $44.6M 85.9% | $17.5M 76.8% |
| Research & Development | $51.9M 15.1% | $52.0M 15.7% | $53.6M 24.4% | $44.9M 32.8% | $29.6M 31.5% | $13.3M 21.2% | $7.4M 14.2% | $4.9M 21.3% |
| Selling, General & Admin | $229.3M 66.6% | $200.0M 60.2% | $180.2M 82.0% | $143.0M 104.4% | $86.7M 92.2% | $48.1M 76.8% | $29.8M 57.5% | $16.5M 72.3% |
| Total Operating Expenses | — | — | — | — | — | — | $37.2M 71.8% | $21.3M 93.6% |
| Operating Income | -$42.8M -12.4% | $8.7M 2.6% | -$68.0M -30.9% | -$72.9M -53.2% | -$40.1M -42.6% | -$6.5M -10.4% | $7.3M 14.1% | -$3.8M -16.8% |
| Interest Expense | $86K 0.0% | $577K 0.2% | $11K 0.0% | $17K 0.0% | $1K 0.0% | $2.6M 4.2% | $4.6M 8.8% | $2.3M 10.0% |
| Interest & Investment Income | $11.8M 3.4% | $12.9M 3.9% | $10.6M 4.8% | $4.0M 2.9% | $68K 0.1% | $373K 0.6% | $312K 0.6% | $24K 0.1% |
| Other Income (Expense), net | $144K 0.0% | $0 0.0% | $0 0.0% | — | — | $0 0.0% | -$2.9M -5.7% | -$272K -1.2% |
| Income Tax Expense | -$5.4M -1.6% | $3.3M 1.0% | $101K 0.0% | -$1.8M -1.3% | -$8.7M -9.3% | $84K 0.1% | $72K 0.1% | $9K 0.0% |
| Net Income | -$24.2M -7.0% | $18.2M 5.5% | -$57.5M -26.1% | -$67.1M -49.0% | -$31.3M -33.3% | -$10.3M -16.4% | $5.3M 10.2% | -$6.4M -27.9% |
| Per Share | ||||||||
| EPS (Basic) | $-0.83 | $0.66 | $-2.14 | $-2.58 | $-1.24 | $-0.54 | $0.35 | $-5.33 |
| EPS (Diluted) | $-0.83 | $0.62 | $-2.14 | $-2.58 | $-1.24 | $-0.54 | $-0.21 | $-5.33 |
| Weighted Avg Shares (Basic) | 29.0M | 27.8M | 26.8M | 26.1M | 25.1M | 18.9M | 8.6M | 1.9M |
| Weighted Avg Shares (Diluted) | 29.0M | 29.3M | 26.8M | 26.1M | 25.1M | 18.9M | 8.7M | 1.9M |
Source: SEC EDGAR XBRL filings (annual, fiscal year). Quarterly flow items are derived from cumulative filings; balance-sheet figures are as-of each period end. Ratios and margins are computed, not reported.
Solve the discounted cash flow backwards, then stress-test the assumptions.
To be worth $36.78 today, the market must believe free cash flow compounds 13.4%/yr for a decade (off $32M normalized FCF).
The market's 13.4% is more conservative than its 6-yr track record.
2-stage DCF · 0.03B shares · net debt -$107M
mean -192.5% · volatility σ 300% · implied rate exceeded in 0/3 yrs
Central path = implied 13.4%/yr growth; shaded band = ±1σ (300%) of this company's historical FCF volatility, widening with time. The wider the band, the less certain the growth.
Reverse DCF: rather than guessing a fair value, we solve for the growth the current price implies, then you stress-test the assumptions. Enterprise value of the FCF stream, less net debt, ÷ shares. Educational — not a recommendation.
Is the value real, and is the business safe? Academic scores + earnings quality + solvency, from SEC filings.
Safe > 2.99 · grey 1.81–2.99 · distress < 1.81
Needs granular two-year detail (receivables, PP&E, D&A, SG&A) — not fully reported.
Cash-conversion data unavailable. Lower/negative accruals = higher quality (Sloan).
Interest coverage is thin — monitor; leverage falling year-over-year.
F-Score (0–9 fundamental momentum), Altman Z (distress risk), and Beneish M (earnings-manipulation screen) are academic models computed from the SEC filings. Screens and context — educational, not recommendations.
What the company returns to shareholders — and whether it's covered by cash.
No dividend to cover. Last year: $0 dividends + $0 buybacks = $0 returned on $28M FCF.
Yields use the latest fiscal-year dividends/buybacks over current market cap. Dividends and buybacks from the SEC cash-flow statement; payout coverage vs net income and free cash flow. Educational — not a recommendation.
Top 40 institutional holders — bubble size is position value, color is the move since last quarter. Hover any holder for detail.
Drag any bubble to rearrange · size = dollar value of the position
Total return (dividends reinvested) vs the market, from quarter-end prices.
Above 0 = ahead of the S&P 500 since the window start; below 0 = behind. Rising means it's pulling ahead.
How far the stock fell below its prior peak. Deeper, longer drawdowns = a rougher ride to the same return.
Quarter-end, dividend-adjusted (total return). Beta & volatility from quarterly returns (annualized). Benchmark is the S&P 500 (SPY total return). Annual returns compound the quarters ending in each calendar year; the first and last years in a window may be partial. Past performance doesn't predict future results.
EOD close · as of 2026-09-17
Where each multiple sits in its own 7-yr range · 36th pct blended
Dot = today · shaded = middle 50% · line = median. Lower percentile = cheaper vs its own 7-yr history.
Is the profit real, and how strong is the balance sheet?
FY2025 · every deduction from revenue to net income
DuPont — the three levers
Watch the leverage lever — a chunk of ROE comes from the balance sheet.
What the company owes vs. what it holds
Year-by-year maturities aren't in SEC companyfacts (footnote-only), so this shows the debt/cash structure and net leverage instead.
Latest year: profit growth vs revenue growth
Profit and sales moved in opposite directions this year.
Each line as % of revenue — the trend in color
| % of revenue | FY2018 | FY2019 | FY2020 | FY2021 | FY2022 | FY2023 | FY2024 | FY2025 |
|---|---|---|---|---|---|---|---|---|
| Cost of Revenue | 23.2 | 14.1 | 15.5 | 16.8 | 23.4 | 20.5 | 18.1 | 20.6 |
| Gross Profit | 76.8 | 85.9 | 84.5 | — | — | — | — | — |
| R&D | 21.3 | 14.2 | 21.2 | 31.5 | 32.8 | 24.4 | 15.7 | 15.1 |
| SG&A | 72.3 | 57.5 | 76.8 | 92.2 | 104.4 | 82.0 | 60.2 | 66.6 |
| Operating Income | -16.8 | 14.1 | -10.4 | -42.6 | -53.2 | -30.9 | 2.6 | -12.4 |
| Income Tax | 0.0 | 0.1 | 0.1 | -9.3 | -1.3 | 0.0 | 1.0 | -1.6 |
| Net Income | -27.9 | 10.2 | -16.4 | -33.3 | -49.0 | -26.1 | 5.5 | -7.0 |
Green = margin-favorable vs the row's own range · red = unfavorable.
The metrics that matter, over time
A 30-second read on CSTL: price, valuation, headline fundamentals, and an auto-generated scorecard from SEC filings. Flags are rule-based signals, not recommendations.
Ranked against 1085 sector peers with collected financials. Valuation from latest close × latest fiscal-year fundamentals; 13F conviction as of 2026-03-31.
Percentile is “goodness” within the peer set (100 = best). For valuation and leverage that means cheaper / less-levered ranks higher.
| Company | Mkt cap ▼ | P/E | EV/EBITDA | P/S | Rev gr | Gross | Net | ROE | ROIC | Net D/EBITDA | 13F |
|---|---|---|---|---|---|---|---|---|---|---|---|
| BCAX | $1.24T | — | — | — | — | — | — | -34.4% | -34.4% | — | 143 |
| LLY | $1.03T | 50.2× | — | 15.9× | 44.7% | 83.0% | 31.7% | 77.8% | 29.9% | — | 4,193 |
| AKTX | $894.1B | — | — | — | — | — | — | -61.1% | -61.1% | — | 1 |
| JNJ | $650.5B | 24.5× | — | 6.9× | 6.0% | 67.9% | 28.5% | 32.9% | 20.7% | — | 4,451 |
| ABBV | $467.1B | 111.9× | 33.4× | 7.6× | 8.6% | 70.2% | 6.9% | -129% | 6.6% | 4.2× | 3,895 |
| MRK | $368.2B | 20.2× | — | 5.7× | 1.3% | 74.8% | 28.1% | 34.7% | 17.9% | — | 3,594 |
| UNH | $339.9B | 28.4× | 19.7× | 0.8× | 11.8% | 88.7% | 2.7% | 12.0% | 6.8% | 3.9× | 2,891 |
| AZN | $257.7B | — | — | — | — | — | — | — | — | — | 1,248 |
| TMO | $248.2B | 37.1× | 31.9× | 5.6× | 3.9% | — | 15.0% | 12.6% | 7.0% | 4.9× | 2,481 |
| AMGN | $204.6B | 26.7× | 17.6× | 5.6× | 10.0% | 67.2% | 21.0% | 89.1% | 12.2% | 3.8× | 3,014 |
| GILD | $187.3B | 22.3× | 20.4× | 6.4× | 2.4% | 78.8% | 28.9% | 37.5% | 17.9% | 2.4× | 2,218 |
| ABT | $178.0B | 27.5× | 19.2× | 4.0× | 5.7% | 56.4% | 14.7% | 12.5% | 10.0% | 1.4× | 2,964 |
| PFE | $157.1B | 20.3× | — | 2.5× | -1.6% | 74.3% | 12.4% | 9.0% | 5.1% | — | 2,838 |
| DHR | $150.2B | 42.1× | 31.0× | 6.1× | 2.9% | 59.1% | 14.7% | 6.9% | 5.1% | 3.4× | 2,083 |
| ISRG | $136.2B | 48.7× | 37.5× | 13.5× | 20.5% | 66.0% | 28.4% | 16.0% | 16.0% | — | 2,190 |
| VRTX | $131.1B | 33.7× | 28.8× | 10.9× | 8.9% | 86.2% | 32.9% | 21.2% | 21.2% | — | 1,609 |
| BMY | $127.8B | 18.2× | — | 2.6× | -0.2% | 71.1% | 14.6% | 38.2% | 11.1% | — | 2,431 |
| MDT | $118.8B | 24.9× | 12.6× | 3.3× | 8.4% | 65.0% | 13.2% | 9.7% | 9.4% | 0.2× | 2,114 |
| CVS | $114.7B | 64.9× | 11.5× | 0.3× | 7.8% | 45.0% | 0.4% | 2.4% | 2.4% | 0.0× | 1,795 |
| SYK | $107.1B | 33.4× | 18.4× | 4.3× | 11.2% | 64.0% | 12.9% | 14.5% | 8.5% | 2.5× | 2,196 |
| MCK | $102.5B | 22.9× | 16.2× | 0.3× | 12.4% | 3.6% | 1.2% | -219% | 109% | 1.0× | 1,946 |
| HCA | $96.4B | 15.1× | — | 1.3× | 7.1% | — | 9.0% | -113% | 16.8% | — | 1,346 |
| ELV | $91.4B | 16.4× | 15.5× | 0.5× | 12.5% | 89.4% | 2.8% | 12.9% | 7.6% | 4.2× | 1,397 |
| REGN | $82.6B | 19.0× | 19.8× | 5.8× | 1.0% | — | 31.4% | 14.4% | 13.6% | 0.5× | 1,336 |
| CI | $72.7B | 12.4× | 5.5× | 0.3× | 11.2% | 21.8% | 2.2% | 14.3% | 14.1% | 0.0× | 1,583 |
| CSTL | $1.1B | — | — | 3.2× | 3.7% | 79.4% | -7.0% | -5.1% | -5.0% | -4.9× | 180 |
Peers = companies sharing CSTL's sector (Healthcare) with collected SEC financials. Multiples use the most recent end-of-day close and latest fiscal-year fundamentals (trailing, not forward). Missing cells mean the peer never reported that line item, has no collected price, or has a non-positive denominator. Not investment advice.