On a strong market day, the "Halftime Report" traders closed the show with their thoughts on the transports and top trades for the second half of the trading day.

Pete Najarian said we may start to see some performance in transports. He added it was slightly concerning to see Barclays downgrade Southwest.

Josh Brown said company specific issues held back big transport names from rallying.

Jon Najarian was a buyer of MBIA.

Trader disclosure: On June 18, 2015, the following stocks and commodities mentioned or intended to be mentioned on CNBC's "Fast Money" were owned by the "Halftime Report" traders: PETE NAJARIAN: Long AMAT, AAPL, BABA, BAC, BMY, BP, CSX, DISCA, DKS, FOXA, GE, KKR, KO, LLY, MRK, PEP, PFE, TEVA, he is long calls AAL, ABX, BAC, BBY, BMY, C, COP, CSX, DAL, DE, ETFC, FCAU, GE, GS, INTC, INVN, JPM, LEN, MT, MU, NUAN, OC, PFE, RAD, RAI, S, SXC, SYY, UAL, USB, VOYA, VZ, WSM, XLF, ZIOP. Today he sold CAH calls. JON NAJARIAN: Long AEP, BBY, CS, CSLT, GE, HOG, HSBC, HZNP, NRG, PG, TLT, VIX, XLI, YPF, he is long calls ANF, ARG, ARIA, BAX, CA, CBS, CTXS, DE, DHI, DRI, EBAY, ETFC, EXPR, FCAU, FITB, GE, GLD, GPS, IDTI, JNPR, KEX, KING, KO, LCI, LLY, M, MBI, MU, NUAN, ONTY, ORCL, PG, PHM, QCOM, RF, S, SFUN, SNDK, SUNE, VIPS, VRX, WEN, WMT. Today he bought MBI, KEX calls, LCI calls, ORCL calls, QCOM calls; today he sold CAH calls. JOSH BROWN: Long AAPL, DE, DNKN, EBAY, FSLR, JMBA, SAM, SHAK, SPWR, TNET, TWTR, XLE, XON.