 You cant always rely on share price appreciation to guarantee a profitable portfolio. Savvy investors know this, and always seek ways to ensure their income stream. Dividends are a common, and popular, way to do this, but bring with them some important questions: Is the dividend reliable does the company pay it out regularly, in full? Does it yield enough to make the investment worthwhile?These are some of the factors that Wall Streets analysts weigh when they review dividend stocks. And fortunately, they can answer them in positive terms for investors. While the market conditions arent really signaling defensive buying the SP 500 has been holding above 3,200 since mid-July, and the NASDAQ has been setting new record highs since June keeping a reserve of defensive stocks is always a sound strategy to harden your portfolio against the unexpected.With this in mind, weve turned to TipRanks database to find three Strong Buy dividend stocks with yields starting at 9, high by any standard, and with potential upsides starting at 14. These are stocks that will both grow the portfolio and provide a steady income.Hercules Capital HTGCWell start in venture capital, the engine of so much economic activity. Hercules Capital offers financing services to small, early-stage companies in the technology, life sciences, and financial SaaS sectors, and boasts some 10 billion committed to its investment portfolio.HTGC weathered the corona storm well in the first quarter, reporting strong EPS above the estimates. Q2, however, saw a decline. Investment income fell nearly 2 year-over-year, and EPS dropped to 32 cents, missing the forecast by one cent. Hercules saw a boost from a 5 drop in operating expenses.The quarterly results, while disappointing, were enough to ensure the companys generous dividend. Hercules has a history of adjusting the payment to keep it line with earnings, but this quarters 32 cents per common share was kept stable. The annualized rate, 1.28, gives a yield of nearly 11.1, which is far better than the 2 average yield found among SP-listed companies. Hercules has a 13-year history of keeping reliable dividend payments.Tim Hayes, of B. Riley FBR, writes of Hercules, While lower interest rates weighed on earnings power during the quarter, NIIshare covered the 0.32share quarterly dividend, and we expect the dividend to remain stable in the near-intermediate term given the healthy cash runway amongst portfolio companies and a strong VC backdrop ... we remain buyers of shares of HTGC, which currently trade at 1.08x 2Q20 NAV.In line with these comments, Hayes rates HTGC a Buy along with a 12.50 price target, which implies a 9 upside from current levels. To watch Hayes track record, click hereWall Street clearly agrees with Hayes Hercules has a unanimous Strong Buy analyst consensus rating, based on 9 analyst reviews. The stock is selling for 11.45 and the average price target of 12.57 is in congruent with Hayes, suggesting a one-year upside of 10. See HTGC stock analysis on TipRanksGlobal Net Lease GNLNext up, Global Net Lease, is a real estate investment trust. REITs are typically dividend champs, due to tax code provisions requiring them to return a high percentage of earnings directly to investors. GNL, with a portfolio built on US and European commercial properties, aims to provide investors with stable dividends and steady portfolio growth potential. While the growth potential has stalled in recent months, due to the ongoing coronavirus crisis, the companys stock shares are up 94 since hitting bottom in March. Earnings during 1H20, the corona half, have been stable, at 44 cents per share for Q1.In an effort to keep the dividend and EPS in line together, the company cut back the quarterly dividend payment during the half. The current dividend is 40 cents per share, making the yield 9.6. This is impressive on its own, but more so considering that it comes after a 20 cut and while the stock has been gradually gaining ground.Berenberg analyst Nathan Crossett writes, The strength of GNLs portfolio through diversification and focus on investment grade tenancy is exemplified by the level of its rent collections during the peak of the pandemic. As of June 2, GNL had collected 96 of the original cash rent due quarter to date for the second quarter; this includes 99 of rent for assets in the United Kingdom and 97 of rent for assets in the rest of Europe.A REIT with that level of success in rent collection is easily rated a Buy, and Crossett adds a 22 price target, suggesting room for 34 upside growth. To watch Crossetts track record, click hereOverall, Global Net Lease has 3 Buys and 1 Hold behind its Strong Buy consensus rating. The stock is selling for 16.43 and has an average price target of 20.17, giving it a 23 upside potential. See GNL stock analysis on TipRanksCherry Hill Mortgage CHMILast on todays list is Cherry Hill Mortgage, named for its headquarters town in New Jersey. This REIT holds a portfolio of mortgage-based assets rather than direct property ownership. CHMIs portfolio includes heavy investments in mortgage service rights and mortgage-backed securities.Through the first quarter, Cherry Hill beat the forecasts on earnings. Quarterly EPS in both Q4 and Q1 were from Q3 2019, an impressive feat during a period when most companies were seeing sharp drops sequentially. Q1 EPS came in at 47 cents, compared to a 43-cent expectation.In a nod to the ongoing health and financial crises, CHMI cut back on its dividend payment in Q2. The company set the payment at 27 cents per share of common stock, giving an annualized payment of 1.08 and a yield of 11.7. That dividend yield compares favorably to most other investments, especially US Treasury bonds which are currently at record low rates.5-star analyst Steven DeLaney, of JMP Securities, likes what he sees in CHMI, viewing the company as fundamentally sound. He writes, in the wake of the March-April market disruption and 1Q20 results ... core earnings and book value held up relatively well despite unprecedented COVID-19-related market volatility. We continue to view the companys valuation as attractive...DeLaneys 10.50 price target supports his Buy rating and suggests a solid one-year upside for the stock of 15.5. To watch DeLaneys track record, click hereCherry Hill is another company with a unanimous Strong Buy analyst consensus rating, this one based on 3 recent reviews. The stocks average price target of 11.33 is somewhat more bullish than DeLaney allows, indicating room for a 25 upside in the next 12 months. See Cherry Hills stock analysis at TipRanksTo find good ideas for divided stocks trading at attractive valuations, visit TipRanks Best Stocks to Buy, a newly launched tool that unites all of TipRanks equity insights. 