Let $$(\Sigma _T,\sigma )$$
(
Σ
T
,
σ
)
be a subshift of finite type with primitive adjacency matrix $$T$$
T
, $$\psi :\Sigma _T \rightarrow \mathbb {R}$$
ψ
:
Σ
T
→
R
a Hölder continuous potential, and $$\mathcal {A}:\Sigma _T \rightarrow \textrm{GL}_d(\mathbb {R})$$
A
:
Σ
T
→
GL
d
(
R
)
a 1-typical, one-step cocycle. For $$t \in \mathbb {R}$$
t
∈
R
consider the sequences of potentials $$\Phi _t=(\varphi _{t,n})_{n \in \mathbb {N}}$$
Φ
t
=
(
φ
t
,
n
)
n
∈
N
defined by $$\begin{aligned}\varphi _{t,n}(x):=S_n \psi (x) + t\log \Vert \mathcal {A}^n(x)\Vert , \, \forall n \in \mathbb {N}.\end{aligned}$$
φ
t
,
n
(
x
)
:
=
S
n
ψ
(
x
)
+
t
log
‖
A
n
(
x
)
‖
,
∀
n
∈
N
.
Using the family of transfer operators defined in this setting by Park and Piraino, for all $$t<0$$
t
<
0
sufficiently close to 0 we prove the existence of Gibbs-type measures for the superadditive sequences of potentials $$\Phi _t$$
Φ
t
. This extends the results of the well-understood subadditive case where $$t \ge 0$$
t
≥
0
. Prior to this, Gibbs-type measures were only known to exist for $$t<0$$
t
<
0
in the conformal, the reducible, the positive, or the dominated, planar settings, in which case they are Gibbs measures in the classical sense. We further prove that the topological pressure function $$t \mapsto P_{\textrm{top}}(\Phi _t,\sigma )$$
t
↦
P
top
(
Φ
t
,
σ
)
is analytic in an open neighbourhood of 0 and has derivative given by the Lyapunov exponents of these Gibbs-type measures.